172572920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{331871}}^1$

素因数の和:331895

約数の個数: 32

約数和(自身を含む): 418158720

約数和(自身を除く): 245585800

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 331871, 663742, 1327484, 1659355, 2654968, 3318710, 4314323, 6637420, 8628646, 13274840, 17257292, 21571615, 34514584, 43143230, 86286460, 172572920]

約数ペア:

[(1, 172572920), (2, 86286460), (4, 43143230), (5, 34514584), (8, 21571615), (10, 17257292), (13, 13274840), (20, 8628646), (26, 6637420), (40, 4314323), (52, 3318710), (65, 2654968), (104, 1659355), (130, 1327484), (260, 663742), (520, 331871)]