20515352

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{227}}^1$

素因数の和:336

約数の個数: 64

約数和(自身を含む): 45964800

約数和(自身を除く): 25449448

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 44, 52, 79, 88, 104, 143, 158, 227, 286, 316, 454, 572, 632, 869, 908, 1027, 1144, 1738, 1816, 2054, 2497, 2951, 3476, 4108, 4994, 5902, 6952, 8216, 9988, 11297, 11804, 17933, 19976, 22594, 23608, 32461, 35866, 45188, 64922, 71732, 90376, 129844, 143464, 197263, 233129, 259688, 394526, 466258, 789052, 932516, 1578104, 1865032, 2564419, 5128838, 10257676, 20515352]

約数ペア:

[(1, 20515352), (2, 10257676), (4, 5128838), (8, 2564419), (11, 1865032), (13, 1578104), (22, 932516), (26, 789052), (44, 466258), (52, 394526), (79, 259688), (88, 233129), (104, 197263), (143, 143464), (158, 129844), (227, 90376), (286, 71732), (316, 64922), (454, 45188), (572, 35866), (632, 32461), (869, 23608), (908, 22594), (1027, 19976), (1144, 17933), (1738, 11804), (1816, 11297), (2054, 9988), (2497, 8216), (2951, 6952), (3476, 5902), (4108, 4994)]