78286520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{150551}}^1$

素因数の和:150575

約数の個数: 32

約数和(自身を含む): 189695520

約数和(自身を除く): 111409000

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 150551, 301102, 602204, 752755, 1204408, 1505510, 1957163, 3011020, 3914326, 6022040, 7828652, 9785815, 15657304, 19571630, 39143260, 78286520]

約数ペア:

[(1, 78286520), (2, 39143260), (4, 19571630), (5, 15657304), (8, 9785815), (10, 7828652), (13, 6022040), (20, 3914326), (26, 3011020), (40, 1957163), (52, 1505510), (65, 1204408), (104, 752755), (130, 602204), (260, 301102), (520, 150551)]