21987218

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{2287}}^1$

素因数の和:2342

約数の個数: 32

約数和(自身を含む): 39536640

約数和(自身を除く): 17549422

約数列:

[1, 2, 11, 19, 22, 23, 38, 46, 209, 253, 418, 437, 506, 874, 2287, 4574, 4807, 9614, 25157, 43453, 50314, 52601, 86906, 105202, 477983, 578611, 955966, 999419, 1157222, 1998838, 10993609, 21987218]

約数ペア:

[(1, 21987218), (2, 10993609), (11, 1998838), (19, 1157222), (22, 999419), (23, 955966), (38, 578611), (46, 477983), (209, 105202), (253, 86906), (418, 52601), (437, 50314), (506, 43453), (874, 25157), (2287, 9614), (4574, 4807)]