221528790

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1$

素因数の和:272

約数の個数: 256

約数和(自身を含む): 737280000

約数和(自身を除く): 515751210

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 19, 21, 27, 30, 31, 35, 38, 42, 45, 54, 57, 62, 63, 70, 90, 93, 95, 105, 114, 126, 133, 135, 155, 171, 186, 189, 190, 199, 210, 217, 266, 270, 279, 285, 310, 315, 342, 378, 398, 399, 434, 465, 513, 558, 570, 589, 597, 630, 651, 665, 798, 837, 855, 930, 945, 995, 1026, 1085, 1178, 1194, 1197, 1302, 1330, 1393, 1395, 1674, 1710, 1767, 1791, 1890, 1953, 1990, 1995, 2170, 2394, 2565, 2786, 2790, 2945, 2985, 3255, 3534, 3582, 3591, 3781, 3906, 3990, 4123, 4179, 4185, 5130, 5301, 5373, 5859, 5890, 5970, 5985, 6169, 6510, 6965, 7182, 7562, 8246, 8358, 8370, 8835, 8955, 9765, 10602, 10746, 11343, 11718, 11970, 12338, 12369, 12537, 13930, 15903, 17670, 17910, 17955, 18507, 18905, 19530, 20615, 20895, 22686, 24738, 25074, 26467, 26505, 26865, 29295, 30845, 31806, 34029, 35910, 37014, 37107, 37611, 37810, 41230, 41790, 43183, 52934, 53010, 53730, 55521, 56715, 58590, 61690, 61845, 62685, 68058, 74214, 75222, 79401, 79515, 86366, 92535, 102087, 111042, 111321, 113430, 117211, 123690, 125370, 129549, 132335, 158802, 159030, 166563, 170145, 185070, 185535, 188055, 204174, 215915, 222642, 234422, 238203, 259098, 264670, 277605, 333126, 340290, 351633, 371070, 376110, 388647, 397005, 431830, 476406, 510435, 555210, 556605, 586055, 647745, 703266, 714609, 777294, 794010, 820477, 832815, 1020870, 1054899, 1113210, 1165941, 1172110, 1191015, 1295490, 1429218, 1640954, 1665630, 1758165, 1943235, 2109798, 2331882, 2382030, 2461431, 3164697, 3516330, 3573045, 3886470, 4102385, 4922862, 5274495, 5829705, 6329394, 7146090, 7384293, 8204770, 10548990, 11659410, 12307155, 14768586, 15823485, 22152879, 24614310, 31646970, 36921465, 44305758, 73842930, 110764395, 221528790]

約数ペア:

[(1, 221528790), (2, 110764395), (3, 73842930), (5, 44305758), (6, 36921465), (7, 31646970), (9, 24614310), (10, 22152879), (14, 15823485), (15, 14768586), (18, 12307155), (19, 11659410), (21, 10548990), (27, 8204770), (30, 7384293), (31, 7146090), (35, 6329394), (38, 5829705), (42, 5274495), (45, 4922862), (54, 4102385), (57, 3886470), (62, 3573045), (63, 3516330), (70, 3164697), (90, 2461431), (93, 2382030), (95, 2331882), (105, 2109798), (114, 1943235), (126, 1758165), (133, 1665630), (135, 1640954), (155, 1429218), (171, 1295490), (186, 1191015), (189, 1172110), (190, 1165941), (199, 1113210), (210, 1054899), (217, 1020870), (266, 832815), (270, 820477), (279, 794010), (285, 777294), (310, 714609), (315, 703266), (342, 647745), (378, 586055), (398, 556605), (399, 555210), (434, 510435), (465, 476406), (513, 431830), (558, 397005), (570, 388647), (589, 376110), (597, 371070), (630, 351633), (651, 340290), (665, 333126), (798, 277605), (837, 264670), (855, 259098), (930, 238203), (945, 234422), (995, 222642), (1026, 215915), (1085, 204174), (1178, 188055), (1194, 185535), (1197, 185070), (1302, 170145), (1330, 166563), (1393, 159030), (1395, 158802), (1674, 132335), (1710, 129549), (1767, 125370), (1791, 123690), (1890, 117211), (1953, 113430), (1990, 111321), (1995, 111042), (2170, 102087), (2394, 92535), (2565, 86366), (2786, 79515), (2790, 79401), (2945, 75222), (2985, 74214), (3255, 68058), (3534, 62685), (3582, 61845), (3591, 61690), (3781, 58590), (3906, 56715), (3990, 55521), (4123, 53730), (4179, 53010), (4185, 52934), (5130, 43183), (5301, 41790), (5373, 41230), (5859, 37810), (5890, 37611), (5970, 37107), (5985, 37014), (6169, 35910), (6510, 34029), (6965, 31806), (7182, 30845), (7562, 29295), (8246, 26865), (8358, 26505), (8370, 26467), (8835, 25074), (8955, 24738), (9765, 22686), (10602, 20895), (10746, 20615), (11343, 19530), (11718, 18905), (11970, 18507), (12338, 17955), (12369, 17910), (12537, 17670), (13930, 15903)]