31437680

素因数分解:

$2^4\times 5^1\times {\mathrm{157}}^1\times {\mathrm{2503}}^1$

素因数の和:2673

約数の個数: 40

約数和(自身を含む): 73587552

約数和(自身を除く): 42149872

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 157, 314, 628, 785, 1256, 1570, 2503, 2512, 3140, 5006, 6280, 10012, 12515, 12560, 20024, 25030, 40048, 50060, 100120, 200240, 392971, 785942, 1571884, 1964855, 3143768, 3929710, 6287536, 7859420, 15718840, 31437680]

約数ペア:

[(1, 31437680), (2, 15718840), (4, 7859420), (5, 6287536), (8, 3929710), (10, 3143768), (16, 1964855), (20, 1571884), (40, 785942), (80, 392971), (157, 200240), (314, 100120), (628, 50060), (785, 40048), (1256, 25030), (1570, 20024), (2503, 12560), (2512, 12515), (3140, 10012), (5006, 6280)]