51321580

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{18461}}^1$

素因数の和:18609

約数の個数: 24

約数和(自身を含む): 108556560

約数和(自身を除く): 57234980

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 18461, 36922, 73844, 92305, 184610, 369220, 2566079, 5132158, 10264316, 12830395, 25660790, 51321580]

約数ペア:

[(1, 51321580), (2, 25660790), (4, 12830395), (5, 10264316), (10, 5132158), (20, 2566079), (139, 369220), (278, 184610), (556, 92305), (695, 73844), (1390, 36922), (2780, 18461)]