20085675

素因数分解:

$3^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{163}}^1$

素因数の和:260

約数の個数: 48

約数和(自身を含む): 35140608

約数和(自身を除く): 15054933

約数列:

[1, 3, 5, 15, 25, 31, 53, 75, 93, 155, 159, 163, 265, 465, 489, 775, 795, 815, 1325, 1643, 2325, 2445, 3975, 4075, 4929, 5053, 8215, 8639, 12225, 15159, 24645, 25265, 25917, 41075, 43195, 75795, 123225, 126325, 129585, 215975, 267809, 378975, 647925, 803427, 1339045, 4017135, 6695225, 20085675]

約数ペア:

[(1, 20085675), (3, 6695225), (5, 4017135), (15, 1339045), (25, 803427), (31, 647925), (53, 378975), (75, 267809), (93, 215975), (155, 129585), (159, 126325), (163, 123225), (265, 75795), (465, 43195), (489, 41075), (775, 25917), (795, 25265), (815, 24645), (1325, 15159), (1643, 12225), (2325, 8639), (2445, 8215), (3975, 5053), (4075, 4929)]