19455775

素因数分解:

$5^2\times {\mathrm{71}}^1\times {\mathrm{97}}^1\times {\mathrm{113}}^1$

素因数の和:291

約数の個数: 24

約数和(自身を含む): 24935904

約数和(自身を除く): 5480129

約数列:

[1, 5, 25, 71, 97, 113, 355, 485, 565, 1775, 2425, 2825, 6887, 8023, 10961, 34435, 40115, 54805, 172175, 200575, 274025, 778231, 3891155, 19455775]

約数ペア:

[(1, 19455775), (5, 3891155), (25, 778231), (71, 274025), (97, 200575), (113, 172175), (355, 54805), (485, 40115), (565, 34435), (1775, 10961), (2425, 8023), (2825, 6887)]