81281060

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{659}}^1\times {\mathrm{881}}^1$

素因数の和:1556

約数の個数: 48

約数和(自身を含む): 195592320

約数和(自身を除く): 114311260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 659, 881, 1318, 1762, 2636, 3295, 3524, 4405, 4613, 6167, 6590, 8810, 9226, 12334, 13180, 17620, 18452, 23065, 24668, 30835, 46130, 61670, 92260, 123340, 580579, 1161158, 2322316, 2902895, 4064053, 5805790, 8128106, 11611580, 16256212, 20320265, 40640530, 81281060]

約数ペア:

[(1, 81281060), (2, 40640530), (4, 20320265), (5, 16256212), (7, 11611580), (10, 8128106), (14, 5805790), (20, 4064053), (28, 2902895), (35, 2322316), (70, 1161158), (140, 580579), (659, 123340), (881, 92260), (1318, 61670), (1762, 46130), (2636, 30835), (3295, 24668), (3524, 23065), (4405, 18452), (4613, 17620), (6167, 13180), (6590, 12334), (8810, 9226)]