20400760

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{9623}}^1$

素因数の和:9687

約数の個数: 32

約数和(自身を含む): 46772640

約数和(自身を除く): 26371880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 9623, 19246, 38492, 48115, 76984, 96230, 192460, 384920, 510019, 1020038, 2040076, 2550095, 4080152, 5100190, 10200380, 20400760]

約数ペア:

[(1, 20400760), (2, 10200380), (4, 5100190), (5, 4080152), (8, 2550095), (10, 2040076), (20, 1020038), (40, 510019), (53, 384920), (106, 192460), (212, 96230), (265, 76984), (424, 48115), (530, 38492), (1060, 19246), (2120, 9623)]