20012790

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{607}}^1$

素因数の和:781

約数の個数: 64

約数和(自身を含む): 55332864

約数和(自身を除く): 35320074

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 157, 210, 314, 471, 607, 785, 942, 1099, 1214, 1570, 1821, 2198, 2355, 3035, 3297, 3642, 4249, 4710, 5495, 6070, 6594, 8498, 9105, 10990, 12747, 16485, 18210, 21245, 25494, 32970, 42490, 63735, 95299, 127470, 190598, 285897, 476495, 571794, 667093, 952990, 1334186, 1429485, 2001279, 2858970, 3335465, 4002558, 6670930, 10006395, 20012790]

約数ペア:

[(1, 20012790), (2, 10006395), (3, 6670930), (5, 4002558), (6, 3335465), (7, 2858970), (10, 2001279), (14, 1429485), (15, 1334186), (21, 952990), (30, 667093), (35, 571794), (42, 476495), (70, 285897), (105, 190598), (157, 127470), (210, 95299), (314, 63735), (471, 42490), (607, 32970), (785, 25494), (942, 21245), (1099, 18210), (1214, 16485), (1570, 12747), (1821, 10990), (2198, 9105), (2355, 8498), (3035, 6594), (3297, 6070), (3642, 5495), (4249, 4710)]