638657380

素因数分解:

$2^2\times 5^1\times {\mathrm{2711}}^1\times {\mathrm{11779}}^1$

素因数の和:14499

約数の個数: 24

約数和(自身を含む): 1341789120

約数和(自身を除く): 703131740

約数列:

[1, 2, 4, 5, 10, 20, 2711, 5422, 10844, 11779, 13555, 23558, 27110, 47116, 54220, 58895, 117790, 235580, 31932869, 63865738, 127731476, 159664345, 319328690, 638657380]

約数ペア:

[(1, 638657380), (2, 319328690), (4, 159664345), (5, 127731476), (10, 63865738), (20, 31932869), (2711, 235580), (5422, 117790), (10844, 58895), (11779, 54220), (13555, 47116), (23558, 27110)]