12805780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{49253}}^1$

素因数の和:49275

約数の個数: 24

約数和(自身を含む): 28961352

約数和(自身を除く): 16155572

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 49253, 98506, 197012, 246265, 492530, 640289, 985060, 1280578, 2561156, 3201445, 6402890, 12805780]

約数ペア:

[(1, 12805780), (2, 6402890), (4, 3201445), (5, 2561156), (10, 1280578), (13, 985060), (20, 640289), (26, 492530), (52, 246265), (65, 197012), (130, 98506), (260, 49253)]