19941545

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{241}}^1$

素因数の和:345

約数の個数: 32

約数和(自身を含む): 27646080

約数和(自身を除く): 7704535

約数列:

[1, 5, 13, 19, 65, 67, 95, 241, 247, 335, 871, 1205, 1235, 1273, 3133, 4355, 4579, 6365, 15665, 16147, 16549, 22895, 59527, 80735, 82745, 209911, 297635, 306793, 1049555, 1533965, 3988309, 19941545]

約数ペア:

[(1, 19941545), (5, 3988309), (13, 1533965), (19, 1049555), (65, 306793), (67, 297635), (95, 209911), (241, 82745), (247, 80735), (335, 59527), (871, 22895), (1205, 16549), (1235, 16147), (1273, 15665), (3133, 6365), (4355, 4579)]