20172718988

素因数分解:

$2^2\times {\mathrm{19}}^2\times {\mathrm{107}}^1\times {\mathrm{137}}^1\times {\mathrm{953}}^1$

素因数の和:1239

約数の個数: 72

約数和(自身を含む): 37920515472

約数和(自身を除く): 17747796484

約数列:

[1, 2, 4, 19, 38, 76, 107, 137, 214, 274, 361, 428, 548, 722, 953, 1444, 1906, 2033, 2603, 3812, 4066, 5206, 8132, 10412, 14659, 18107, 29318, 36214, 38627, 49457, 58636, 72428, 77254, 98914, 101971, 130561, 154508, 197828, 203942, 261122, 278521, 344033, 407884, 522244, 557042, 688066, 1114084, 1376132, 1937449, 2480659, 3874898, 4961318, 5291899, 7749796, 9922636, 10583798, 13970027, 21167596, 27940054, 36811531, 47132521, 55880108, 73623062, 94265042, 147246124, 188530084, 265430513, 530861026, 1061722052, 5043179747, 10086359494, 20172718988]

約数ペア:

[(1, 20172718988), (2, 10086359494), (4, 5043179747), (19, 1061722052), (38, 530861026), (76, 265430513), (107, 188530084), (137, 147246124), (214, 94265042), (274, 73623062), (361, 55880108), (428, 47132521), (548, 36811531), (722, 27940054), (953, 21167596), (1444, 13970027), (1906, 10583798), (2033, 9922636), (2603, 7749796), (3812, 5291899), (4066, 4961318), (5206, 3874898), (8132, 2480659), (10412, 1937449), (14659, 1376132), (18107, 1114084), (29318, 688066), (36214, 557042), (38627, 522244), (49457, 407884), (58636, 344033), (72428, 278521), (77254, 261122), (98914, 203942), (101971, 197828), (130561, 154508)]