20984788

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{191}}^1\times {\mathrm{227}}^1$

素因数の和:444

約数の個数: 36

約数和(自身を含む): 40755456

約数和(自身を除く): 19770668

約数列:

[1, 2, 4, 11, 22, 44, 121, 191, 227, 242, 382, 454, 484, 764, 908, 2101, 2497, 4202, 4994, 8404, 9988, 23111, 27467, 43357, 46222, 54934, 86714, 92444, 109868, 173428, 476927, 953854, 1907708, 5246197, 10492394, 20984788]

約数ペア:

[(1, 20984788), (2, 10492394), (4, 5246197), (11, 1907708), (22, 953854), (44, 476927), (121, 173428), (191, 109868), (227, 92444), (242, 86714), (382, 54934), (454, 46222), (484, 43357), (764, 27467), (908, 23111), (2101, 9988), (2497, 8404), (4202, 4994)]