20440780

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{32969}}^1$

素因数の和:33009

約数の個数: 24

約数和(自身を含む): 44311680

約数和(自身を除く): 23870900

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 32969, 65938, 131876, 164845, 329690, 659380, 1022039, 2044078, 4088156, 5110195, 10220390, 20440780]

約数ペア:

[(1, 20440780), (2, 10220390), (4, 5110195), (5, 4088156), (10, 2044078), (20, 1022039), (31, 659380), (62, 329690), (124, 164845), (155, 131876), (310, 65938), (620, 32969)]