20854880945

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{311}}^1\times {\mathrm{4861}}^1$

素因数の和:5297

約数の個数: 32

約数和(自身を含む): 26212792320

約数和(自身を除く): 5357911375

約数列:

[1, 5, 31, 89, 155, 311, 445, 1555, 2759, 4861, 9641, 13795, 24305, 27679, 48205, 138395, 150691, 432629, 753455, 858049, 1511771, 2163145, 4290245, 7558855, 13411499, 46864901, 67057495, 134547619, 234324505, 672738095, 4170976189, 20854880945]

約数ペア:

[(1, 20854880945), (5, 4170976189), (31, 672738095), (89, 234324505), (155, 134547619), (311, 67057495), (445, 46864901), (1555, 13411499), (2759, 7558855), (4861, 4290245), (9641, 2163145), (13795, 1511771), (24305, 858049), (27679, 753455), (48205, 432629), (138395, 150691)]