78858520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{151651}}^1$

素因数の和:151675

約数の個数: 32

約数和(自身を含む): 191081520

約数和(自身を除く): 112223000

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 151651, 303302, 606604, 758255, 1213208, 1516510, 1971463, 3033020, 3942926, 6066040, 7885852, 9857315, 15771704, 19714630, 39429260, 78858520]

約数ペア:

[(1, 78858520), (2, 39429260), (4, 19714630), (5, 15771704), (8, 9857315), (10, 7885852), (13, 6066040), (20, 3942926), (26, 3033020), (40, 1971463), (52, 1516510), (65, 1213208), (104, 758255), (130, 606604), (260, 303302), (520, 151651)]