157805680

素因数分解:

$2^4\times 5^1\times {\mathrm{1972571}}^1$

素因数の和:1972584

約数の個数: 20

約数和(自身を含む): 366898392

約数和(自身を除く): 209092712

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1972571, 3945142, 7890284, 9862855, 15780568, 19725710, 31561136, 39451420, 78902840, 157805680]

約数ペア:

[(1, 157805680), (2, 78902840), (4, 39451420), (5, 31561136), (8, 19725710), (10, 15780568), (16, 9862855), (20, 7890284), (40, 3945142), (80, 1972571)]