21640580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{83233}}^1$

素因数の和:83255

約数の個数: 24

約数和(自身を含む): 48941592

約数和(自身を除く): 27301012

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 83233, 166466, 332932, 416165, 832330, 1082029, 1664660, 2164058, 4328116, 5410145, 10820290, 21640580]

約数ペア:

[(1, 21640580), (2, 10820290), (4, 5410145), (5, 4328116), (10, 2164058), (13, 1664660), (20, 1082029), (26, 832330), (52, 416165), (65, 332932), (130, 166466), (260, 83233)]