81041480

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{155849}}^1$

素因数の和:155873

約数の個数: 32

約数和(自身を含む): 196371000

約数和(自身を除く): 115329520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 155849, 311698, 623396, 779245, 1246792, 1558490, 2026037, 3116980, 4052074, 6233960, 8104148, 10130185, 16208296, 20260370, 40520740, 81041480]

約数ペア:

[(1, 81041480), (2, 40520740), (4, 20260370), (5, 16208296), (8, 10130185), (10, 8104148), (13, 6233960), (20, 4052074), (26, 3116980), (40, 2026037), (52, 1558490), (65, 1246792), (104, 779245), (130, 623396), (260, 311698), (520, 155849)]