28656180

素因数分解:

$2^2\times 3^4\times 5^1\times 7^2\times {\mathrm{19}}^2$

素因数の和:73

約数の個数: 270

約数和(自身を含む): 110365794

約数和(自身を除く): 81709614

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 19, 20, 21, 27, 28, 30, 35, 36, 38, 42, 45, 49, 54, 57, 60, 63, 70, 76, 81, 84, 90, 95, 98, 105, 108, 114, 126, 133, 135, 140, 147, 162, 171, 180, 189, 190, 196, 210, 228, 245, 252, 266, 270, 285, 294, 315, 324, 342, 361, 378, 380, 399, 405, 420, 441, 490, 513, 532, 540, 567, 570, 588, 630, 665, 684, 722, 735, 756, 798, 810, 855, 882, 931, 945, 980, 1026, 1083, 1134, 1140, 1197, 1260, 1323, 1330, 1444, 1470, 1539, 1596, 1620, 1710, 1764, 1805, 1862, 1890, 1995, 2052, 2166, 2205, 2268, 2394, 2527, 2565, 2646, 2660, 2793, 2835, 2940, 3078, 3249, 3420, 3591, 3610, 3724, 3780, 3969, 3990, 4332, 4410, 4655, 4788, 5054, 5130, 5292, 5415, 5586, 5670, 5985, 6156, 6498, 6615, 7182, 7220, 7581, 7695, 7938, 7980, 8379, 8820, 9310, 9747, 10108, 10260, 10773, 10830, 11172, 11340, 11970, 12635, 12996, 13230, 13965, 14364, 15162, 15390, 15876, 16245, 16758, 17689, 17955, 18620, 19494, 19845, 21546, 21660, 22743, 23940, 25137, 25270, 26460, 27930, 29241, 30324, 30780, 32490, 33516, 35378, 35910, 37905, 38988, 39690, 41895, 43092, 45486, 48735, 50274, 50540, 53067, 53865, 55860, 58482, 64980, 68229, 70756, 71820, 75411, 75810, 79380, 83790, 88445, 90972, 97470, 100548, 106134, 107730, 113715, 116964, 125685, 136458, 146205, 150822, 151620, 159201, 167580, 176890, 194940, 204687, 212268, 215460, 227430, 251370, 265335, 272916, 292410, 301644, 318402, 341145, 353780, 377055, 409374, 454860, 477603, 502740, 530670, 584820, 636804, 682290, 754110, 796005, 818748, 955206, 1023435, 1061340, 1364580, 1432809, 1508220, 1592010, 1910412, 2046870, 2388015, 2865618, 3184020, 4093740, 4776030, 5731236, 7164045, 9552060, 14328090, 28656180]

約数ペア:

[(1, 28656180), (2, 14328090), (3, 9552060), (4, 7164045), (5, 5731236), (6, 4776030), (7, 4093740), (9, 3184020), (10, 2865618), (12, 2388015), (14, 2046870), (15, 1910412), (18, 1592010), (19, 1508220), (20, 1432809), (21, 1364580), (27, 1061340), (28, 1023435), (30, 955206), (35, 818748), (36, 796005), (38, 754110), (42, 682290), (45, 636804), (49, 584820), (54, 530670), (57, 502740), (60, 477603), (63, 454860), (70, 409374), (76, 377055), (81, 353780), (84, 341145), (90, 318402), (95, 301644), (98, 292410), (105, 272916), (108, 265335), (114, 251370), (126, 227430), (133, 215460), (135, 212268), (140, 204687), (147, 194940), (162, 176890), (171, 167580), (180, 159201), (189, 151620), (190, 150822), (196, 146205), (210, 136458), (228, 125685), (245, 116964), (252, 113715), (266, 107730), (270, 106134), (285, 100548), (294, 97470), (315, 90972), (324, 88445), (342, 83790), (361, 79380), (378, 75810), (380, 75411), (399, 71820), (405, 70756), (420, 68229), (441, 64980), (490, 58482), (513, 55860), (532, 53865), (540, 53067), (567, 50540), (570, 50274), (588, 48735), (630, 45486), (665, 43092), (684, 41895), (722, 39690), (735, 38988), (756, 37905), (798, 35910), (810, 35378), (855, 33516), (882, 32490), (931, 30780), (945, 30324), (980, 29241), (1026, 27930), (1083, 26460), (1134, 25270), (1140, 25137), (1197, 23940), (1260, 22743), (1323, 21660), (1330, 21546), (1444, 19845), (1470, 19494), (1539, 18620), (1596, 17955), (1620, 17689), (1710, 16758), (1764, 16245), (1805, 15876), (1862, 15390), (1890, 15162), (1995, 14364), (2052, 13965), (2166, 13230), (2205, 12996), (2268, 12635), (2394, 11970), (2527, 11340), (2565, 11172), (2646, 10830), (2660, 10773), (2793, 10260), (2835, 10108), (2940, 9747), (3078, 9310), (3249, 8820), (3420, 8379), (3591, 7980), (3610, 7938), (3724, 7695), (3780, 7581), (3969, 7220), (3990, 7182), (4332, 6615), (4410, 6498), (4655, 6156), (4788, 5985), (5054, 5670), (5130, 5586), (5292, 5415)]