256972940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{181}}^1\times {\mathrm{10141}}^1$

素因数の和:10338

約数の個数: 48

約数和(自身を含む): 620203584

約数和(自身を除く): 363230644

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 181, 362, 724, 905, 1267, 1810, 2534, 3620, 5068, 6335, 10141, 12670, 20282, 25340, 40564, 50705, 70987, 101410, 141974, 202820, 283948, 354935, 709870, 1419740, 1835521, 3671042, 7342084, 9177605, 12848647, 18355210, 25697294, 36710420, 51394588, 64243235, 128486470, 256972940]

約数ペア:

[(1, 256972940), (2, 128486470), (4, 64243235), (5, 51394588), (7, 36710420), (10, 25697294), (14, 18355210), (20, 12848647), (28, 9177605), (35, 7342084), (70, 3671042), (140, 1835521), (181, 1419740), (362, 709870), (724, 354935), (905, 283948), (1267, 202820), (1810, 141974), (2534, 101410), (3620, 70987), (5068, 50705), (6335, 40564), (10141, 25340), (12670, 20282)]