21011490

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{443}}^1$

素因数の和:504

約数の個数: 96

約数和(自身を含む): 59844096

約数和(自身を除く): 38832606

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 17, 18, 30, 31, 34, 45, 51, 62, 85, 90, 93, 102, 153, 155, 170, 186, 255, 279, 306, 310, 443, 465, 510, 527, 558, 765, 886, 930, 1054, 1329, 1395, 1530, 1581, 2215, 2635, 2658, 2790, 3162, 3987, 4430, 4743, 5270, 6645, 7531, 7905, 7974, 9486, 13290, 13733, 15062, 15810, 19935, 22593, 23715, 27466, 37655, 39870, 41199, 45186, 47430, 67779, 68665, 75310, 82398, 112965, 123597, 135558, 137330, 205995, 225930, 233461, 247194, 338895, 411990, 466922, 617985, 677790, 700383, 1167305, 1235970, 1400766, 2101149, 2334610, 3501915, 4202298, 7003830, 10505745, 21011490]

約数ペア:

[(1, 21011490), (2, 10505745), (3, 7003830), (5, 4202298), (6, 3501915), (9, 2334610), (10, 2101149), (15, 1400766), (17, 1235970), (18, 1167305), (30, 700383), (31, 677790), (34, 617985), (45, 466922), (51, 411990), (62, 338895), (85, 247194), (90, 233461), (93, 225930), (102, 205995), (153, 137330), (155, 135558), (170, 123597), (186, 112965), (255, 82398), (279, 75310), (306, 68665), (310, 67779), (443, 47430), (465, 45186), (510, 41199), (527, 39870), (558, 37655), (765, 27466), (886, 23715), (930, 22593), (1054, 19935), (1329, 15810), (1395, 15062), (1530, 13733), (1581, 13290), (2215, 9486), (2635, 7974), (2658, 7905), (2790, 7531), (3162, 6645), (3987, 5270), (4430, 4743)]