19811325

素因数分解:

$3^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{8521}}^1$

素因数の和:8565

約数の個数: 24

約数和(自身を含む): 33815296

約数和(自身を除く): 14003971

約数列:

[1, 3, 5, 15, 25, 31, 75, 93, 155, 465, 775, 2325, 8521, 25563, 42605, 127815, 213025, 264151, 639075, 792453, 1320755, 3962265, 6603775, 19811325]

約数ペア:

[(1, 19811325), (3, 6603775), (5, 3962265), (15, 1320755), (25, 792453), (31, 639075), (75, 264151), (93, 213025), (155, 127815), (465, 42605), (775, 25563), (2325, 8521)]