20909872

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{42157}}^1$

素因数の和:42196

約数の個数: 20

約数和(自身を含む): 41820736

約数和(自身を除く): 20910864

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 42157, 84314, 168628, 337256, 674512, 1306867, 2613734, 5227468, 10454936, 20909872]

約数ペア:

[(1, 20909872), (2, 10454936), (4, 5227468), (8, 2613734), (16, 1306867), (31, 674512), (62, 337256), (124, 168628), (248, 84314), (496, 42157)]