19456970

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{29}}^1\times {\mathrm{397}}^1$

素因数の和:459

約数の個数: 48

約数和(自身を含む): 39330360

約数和(自身を除く): 19873390

約数列:

[1, 2, 5, 10, 13, 26, 29, 58, 65, 130, 145, 169, 290, 338, 377, 397, 754, 794, 845, 1690, 1885, 1985, 3770, 3970, 4901, 5161, 9802, 10322, 11513, 23026, 24505, 25805, 49010, 51610, 57565, 67093, 115130, 134186, 149669, 299338, 335465, 670930, 748345, 1496690, 1945697, 3891394, 9728485, 19456970]

約数ペア:

[(1, 19456970), (2, 9728485), (5, 3891394), (10, 1945697), (13, 1496690), (26, 748345), (29, 670930), (58, 335465), (65, 299338), (130, 149669), (145, 134186), (169, 115130), (290, 67093), (338, 57565), (377, 51610), (397, 49010), (754, 25805), (794, 24505), (845, 23026), (1690, 11513), (1885, 10322), (1985, 9802), (3770, 5161), (3970, 4901)]