21656675

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{359}}^1$

素因数の和:515

約数の個数: 24

約数和(自身を含む): 28569600

約数和(自身を除く): 6912925

約数列:

[1, 5, 19, 25, 95, 127, 359, 475, 635, 1795, 2413, 3175, 6821, 8975, 12065, 34105, 45593, 60325, 170525, 227965, 866267, 1139825, 4331335, 21656675]

約数ペア:

[(1, 21656675), (5, 4331335), (19, 1139825), (25, 866267), (95, 227965), (127, 170525), (359, 60325), (475, 45593), (635, 34105), (1795, 12065), (2413, 8975), (3175, 6821)]