21277889164

素因数分解:

$2^2\times 7^2\times {\mathrm{29}}^1\times {\mathrm{1231}}^1\times {\mathrm{3041}}^1$

素因数の和:4319

約数の個数: 72

約数和(自身を含む): 44860495680

約数和(自身を除く): 23582606516

約数列:

[1, 2, 4, 7, 14, 28, 29, 49, 58, 98, 116, 196, 203, 406, 812, 1231, 1421, 2462, 2842, 3041, 4924, 5684, 6082, 8617, 12164, 17234, 21287, 34468, 35699, 42574, 60319, 71398, 85148, 88189, 120638, 142796, 149009, 176378, 241276, 249893, 298018, 352756, 499786, 596036, 617323, 999572, 1234646, 1749251, 2469292, 3498502, 3743471, 4321261, 6997004, 7486942, 8642522, 14973884, 17285044, 26204297, 52408594, 104817188, 108560659, 183430079, 217121318, 366860158, 434242636, 733720316, 759924613, 1519849226, 3039698452, 5319472291, 10638944582, 21277889164]

約数ペア:

[(1, 21277889164), (2, 10638944582), (4, 5319472291), (7, 3039698452), (14, 1519849226), (28, 759924613), (29, 733720316), (49, 434242636), (58, 366860158), (98, 217121318), (116, 183430079), (196, 108560659), (203, 104817188), (406, 52408594), (812, 26204297), (1231, 17285044), (1421, 14973884), (2462, 8642522), (2842, 7486942), (3041, 6997004), (4924, 4321261), (5684, 3743471), (6082, 3498502), (8617, 2469292), (12164, 1749251), (17234, 1234646), (21287, 999572), (34468, 617323), (35699, 596036), (42574, 499786), (60319, 352756), (71398, 298018), (85148, 249893), (88189, 241276), (120638, 176378), (142796, 149009)]