20131781240

素因数分解:

$2^3\times 5^1\times {\mathrm{7151}}^1\times {\mathrm{70381}}^1$

素因数の和:77543

約数の個数: 32

約数和(自身を含む): 45303485760

約数和(自身を除く): 25171704520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 7151, 14302, 28604, 35755, 57208, 70381, 71510, 140762, 143020, 281524, 286040, 351905, 563048, 703810, 1407620, 2815240, 503294531, 1006589062, 2013178124, 2516472655, 4026356248, 5032945310, 10065890620, 20131781240]

約数ペア:

[(1, 20131781240), (2, 10065890620), (4, 5032945310), (5, 4026356248), (8, 2516472655), (10, 2013178124), (20, 1006589062), (40, 503294531), (7151, 2815240), (14302, 1407620), (28604, 703810), (35755, 563048), (57208, 351905), (70381, 286040), (71510, 281524), (140762, 143020)]