128213240

素因数分解:

$2^3\times 5^1\times {\mathrm{3205331}}^1$

素因数の和:3205342

約数の個数: 16

約数和(自身を含む): 288479880

約数和(自身を除く): 160266640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3205331, 6410662, 12821324, 16026655, 25642648, 32053310, 64106620, 128213240]

約数ペア:

[(1, 128213240), (2, 64106620), (4, 32053310), (5, 25642648), (8, 16026655), (10, 12821324), (20, 6410662), (40, 3205331)]