28500780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1$

素因数の和:260

約数の個数: 192

約数和(自身を含む): 103219200

約数和(自身を除く): 74718420

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, 15, 20, 21, 22, 28, 30, 31, 33, 35, 42, 44, 55, 60, 62, 66, 70, 77, 84, 93, 105, 110, 124, 132, 140, 154, 155, 165, 186, 199, 210, 217, 220, 231, 308, 310, 330, 341, 372, 385, 398, 420, 434, 462, 465, 597, 620, 651, 660, 682, 770, 796, 868, 924, 930, 995, 1023, 1085, 1155, 1194, 1302, 1364, 1393, 1540, 1705, 1860, 1990, 2046, 2170, 2189, 2310, 2387, 2388, 2604, 2786, 2985, 3255, 3410, 3980, 4092, 4179, 4340, 4378, 4620, 4774, 5115, 5572, 5970, 6169, 6510, 6567, 6820, 6965, 7161, 8358, 8756, 9548, 10230, 10945, 11935, 11940, 12338, 13020, 13134, 13930, 14322, 15323, 16716, 18507, 20460, 20895, 21890, 23870, 24676, 26268, 27860, 28644, 30646, 30845, 32835, 35805, 37014, 41790, 43183, 43780, 45969, 47740, 61292, 61690, 65670, 67859, 71610, 74028, 76615, 83580, 86366, 91938, 92535, 123380, 129549, 131340, 135718, 143220, 153230, 172732, 183876, 185070, 203577, 215915, 229845, 259098, 271436, 306460, 339295, 370140, 407154, 431830, 459690, 475013, 518196, 647745, 678590, 814308, 863660, 919380, 950026, 1017885, 1295490, 1357180, 1425039, 1900052, 2035770, 2375065, 2590980, 2850078, 4071540, 4750130, 5700156, 7125195, 9500260, 14250390, 28500780]

約数ペア:

[(1, 28500780), (2, 14250390), (3, 9500260), (4, 7125195), (5, 5700156), (6, 4750130), (7, 4071540), (10, 2850078), (11, 2590980), (12, 2375065), (14, 2035770), (15, 1900052), (20, 1425039), (21, 1357180), (22, 1295490), (28, 1017885), (30, 950026), (31, 919380), (33, 863660), (35, 814308), (42, 678590), (44, 647745), (55, 518196), (60, 475013), (62, 459690), (66, 431830), (70, 407154), (77, 370140), (84, 339295), (93, 306460), (105, 271436), (110, 259098), (124, 229845), (132, 215915), (140, 203577), (154, 185070), (155, 183876), (165, 172732), (186, 153230), (199, 143220), (210, 135718), (217, 131340), (220, 129549), (231, 123380), (308, 92535), (310, 91938), (330, 86366), (341, 83580), (372, 76615), (385, 74028), (398, 71610), (420, 67859), (434, 65670), (462, 61690), (465, 61292), (597, 47740), (620, 45969), (651, 43780), (660, 43183), (682, 41790), (770, 37014), (796, 35805), (868, 32835), (924, 30845), (930, 30646), (995, 28644), (1023, 27860), (1085, 26268), (1155, 24676), (1194, 23870), (1302, 21890), (1364, 20895), (1393, 20460), (1540, 18507), (1705, 16716), (1860, 15323), (1990, 14322), (2046, 13930), (2170, 13134), (2189, 13020), (2310, 12338), (2387, 11940), (2388, 11935), (2604, 10945), (2786, 10230), (2985, 9548), (3255, 8756), (3410, 8358), (3980, 7161), (4092, 6965), (4179, 6820), (4340, 6567), (4378, 6510), (4620, 6169), (4774, 5970), (5115, 5572)]