21770370

素因数分解:

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

素因数の和:87

約数の個数: 144

約数和(自身を含む): 64366848

約数和(自身を除く): 42596478

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 17, 18, 27, 30, 31, 34, 45, 51, 54, 62, 81, 85, 90, 93, 102, 135, 153, 155, 162, 170, 186, 243, 255, 270, 279, 289, 306, 310, 405, 459, 465, 486, 510, 527, 558, 578, 765, 810, 837, 867, 918, 930, 1054, 1215, 1377, 1395, 1445, 1530, 1581, 1674, 1734, 2295, 2430, 2511, 2601, 2635, 2754, 2790, 2890, 3162, 4131, 4185, 4335, 4590, 4743, 5022, 5202, 5270, 6885, 7533, 7803, 7905, 8262, 8370, 8670, 8959, 9486, 12555, 13005, 13770, 14229, 15066, 15606, 15810, 17918, 20655, 23409, 23715, 25110, 26010, 26877, 28458, 37665, 39015, 41310, 42687, 44795, 46818, 47430, 53754, 70227, 71145, 75330, 78030, 80631, 85374, 89590, 117045, 128061, 134385, 140454, 142290, 161262, 213435, 234090, 241893, 256122, 268770, 351135, 403155, 426870, 483786, 640305, 702270, 725679, 806310, 1209465, 1280610, 1451358, 2177037, 2418930, 3628395, 4354074, 7256790, 10885185, 21770370]

約数ペア:

[(1, 21770370), (2, 10885185), (3, 7256790), (5, 4354074), (6, 3628395), (9, 2418930), (10, 2177037), (15, 1451358), (17, 1280610), (18, 1209465), (27, 806310), (30, 725679), (31, 702270), (34, 640305), (45, 483786), (51, 426870), (54, 403155), (62, 351135), (81, 268770), (85, 256122), (90, 241893), (93, 234090), (102, 213435), (135, 161262), (153, 142290), (155, 140454), (162, 134385), (170, 128061), (186, 117045), (243, 89590), (255, 85374), (270, 80631), (279, 78030), (289, 75330), (306, 71145), (310, 70227), (405, 53754), (459, 47430), (465, 46818), (486, 44795), (510, 42687), (527, 41310), (558, 39015), (578, 37665), (765, 28458), (810, 26877), (837, 26010), (867, 25110), (918, 23715), (930, 23409), (1054, 20655), (1215, 17918), (1377, 15810), (1395, 15606), (1445, 15066), (1530, 14229), (1581, 13770), (1674, 13005), (1734, 12555), (2295, 9486), (2430, 8959), (2511, 8670), (2601, 8370), (2635, 8262), (2754, 7905), (2790, 7803), (2890, 7533), (3162, 6885), (4131, 5270), (4185, 5202), (4335, 5022), (4590, 4743)]