21816392

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{2357}}^1$

素因数の和:2465

約数の個数: 32

約数和(自身を含む): 44566200

約数和(自身を除く): 22749808

約数列:

[1, 2, 4, 8, 13, 26, 52, 89, 104, 178, 356, 712, 1157, 2314, 2357, 4628, 4714, 9256, 9428, 18856, 30641, 61282, 122564, 209773, 245128, 419546, 839092, 1678184, 2727049, 5454098, 10908196, 21816392]

約数ペア:

[(1, 21816392), (2, 10908196), (4, 5454098), (8, 2727049), (13, 1678184), (26, 839092), (52, 419546), (89, 245128), (104, 209773), (178, 122564), (356, 61282), (712, 30641), (1157, 18856), (2314, 9428), (2357, 9256), (4628, 4714)]