313620980

素因数分解:

$2^2\times 5^1\times {\mathrm{1579}}^1\times {\mathrm{9931}}^1$

素因数の和:11519

約数の個数: 24

約数和(自身を含む): 659087520

約数和(自身を除く): 345466540

約数列:

[1, 2, 4, 5, 10, 20, 1579, 3158, 6316, 7895, 9931, 15790, 19862, 31580, 39724, 49655, 99310, 198620, 15681049, 31362098, 62724196, 78405245, 156810490, 313620980]

約数ペア:

[(1, 313620980), (2, 156810490), (4, 78405245), (5, 62724196), (10, 31362098), (20, 15681049), (1579, 198620), (3158, 99310), (6316, 49655), (7895, 39724), (9931, 31580), (15790, 19862)]