21011416

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{1009}}^1$

素因数の和:1171

約数の個数: 32

約数和(自身を含む): 41814000

約数和(自身を除く): 20802584

約数列:

[1, 2, 4, 8, 19, 38, 76, 137, 152, 274, 548, 1009, 1096, 2018, 2603, 4036, 5206, 8072, 10412, 19171, 20824, 38342, 76684, 138233, 153368, 276466, 552932, 1105864, 2626427, 5252854, 10505708, 21011416]

約数ペア:

[(1, 21011416), (2, 10505708), (4, 5252854), (8, 2626427), (19, 1105864), (38, 552932), (76, 276466), (137, 153368), (152, 138233), (274, 76684), (548, 38342), (1009, 20824), (1096, 19171), (2018, 10412), (2603, 8072), (4036, 5206)]