64807240

素因数分解:

$2^3\times 5^1\times {\mathrm{239}}^1\times {\mathrm{6779}}^1$

素因数の和:7029

約数の個数: 32

約数和(自身を含む): 146448000

約数和(自身を除く): 81640760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 239, 478, 956, 1195, 1912, 2390, 4780, 6779, 9560, 13558, 27116, 33895, 54232, 67790, 135580, 271160, 1620181, 3240362, 6480724, 8100905, 12961448, 16201810, 32403620, 64807240]

約数ペア:

[(1, 64807240), (2, 32403620), (4, 16201810), (5, 12961448), (8, 8100905), (10, 6480724), (20, 3240362), (40, 1620181), (239, 271160), (478, 135580), (956, 67790), (1195, 54232), (1912, 33895), (2390, 27116), (4780, 13558), (6779, 9560)]