490256

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{2357}}^1$

素因数の和:2378

約数の個数: 20

約数和(自身を含む): 1023372

約数和(自身を除く): 533116

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 2357, 4714, 9428, 18856, 30641, 37712, 61282, 122564, 245128, 490256]

約数ペア:

[(1, 490256), (2, 245128), (4, 122564), (8, 61282), (13, 37712), (16, 30641), (26, 18856), (52, 9428), (104, 4714), (208, 2357)]