81783780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{104851}}^1$

素因数の和:104876

約数の個数: 48

約数和(自身を含む): 246611904

約数和(自身を除く): 164828124

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 104851, 209702, 314553, 419404, 524255, 629106, 1048510, 1258212, 1363063, 1572765, 2097020, 2726126, 3145530, 4089189, 5452252, 6291060, 6815315, 8178378, 13630630, 16356756, 20445945, 27261260, 40891890, 81783780]

約数ペア:

[(1, 81783780), (2, 40891890), (3, 27261260), (4, 20445945), (5, 16356756), (6, 13630630), (10, 8178378), (12, 6815315), (13, 6291060), (15, 5452252), (20, 4089189), (26, 3145530), (30, 2726126), (39, 2097020), (52, 1572765), (60, 1363063), (65, 1258212), (78, 1048510), (130, 629106), (156, 524255), (195, 419404), (260, 314553), (390, 209702), (780, 104851)]