128978980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{496073}}^1$

素因数の和:496095

約数の個数: 24

約数和(自身を含む): 291691512

約数和(自身を除く): 162712532

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 496073, 992146, 1984292, 2480365, 4960730, 6448949, 9921460, 12897898, 25795796, 32244745, 64489490, 128978980]

約数ペア:

[(1, 128978980), (2, 64489490), (4, 32244745), (5, 25795796), (10, 12897898), (13, 9921460), (20, 6448949), (26, 4960730), (52, 2480365), (65, 1984292), (130, 992146), (260, 496073)]