19811908

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{3571}}^1$

素因数の和:3667

約数の個数: 24

約数和(自身を含む): 37005920

約数和(自身を除く): 17194012

約数列:

[1, 2, 4, 19, 38, 73, 76, 146, 292, 1387, 2774, 3571, 5548, 7142, 14284, 67849, 135698, 260683, 271396, 521366, 1042732, 4952977, 9905954, 19811908]

約数ペア:

[(1, 19811908), (2, 9905954), (4, 4952977), (19, 1042732), (38, 521366), (73, 271396), (76, 260683), (146, 135698), (292, 67849), (1387, 14284), (2774, 7142), (3571, 5548)]