256501180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{986543}}^1$

素因数の和:986565

約数の個数: 24

約数和(自身を含む): 580087872

約数和(自身を除く): 323586692

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 986543, 1973086, 3946172, 4932715, 9865430, 12825059, 19730860, 25650118, 51300236, 64125295, 128250590, 256501180]

約数ペア:

[(1, 256501180), (2, 128250590), (4, 64125295), (5, 51300236), (10, 25650118), (13, 19730860), (20, 12825059), (26, 9865430), (52, 4932715), (65, 3946172), (130, 1973086), (260, 986543)]