19827925

素因数分解:

$5^2\times {\mathrm{13}}^3\times {\mathrm{19}}^2$

素因数の和:87

約数の個数: 36

約数和(自身を含む): 28110180

約数和(自身を除く): 8282255

約数列:

[1, 5, 13, 19, 25, 65, 95, 169, 247, 325, 361, 475, 845, 1235, 1805, 2197, 3211, 4225, 4693, 6175, 9025, 10985, 16055, 23465, 41743, 54925, 61009, 80275, 117325, 208715, 305045, 793117, 1043575, 1525225, 3965585, 19827925]

約数ペア:

[(1, 19827925), (5, 3965585), (13, 1525225), (19, 1043575), (25, 793117), (65, 305045), (95, 208715), (169, 117325), (247, 80275), (325, 61009), (361, 54925), (475, 41743), (845, 23465), (1235, 16055), (1805, 10985), (2197, 9025), (3211, 6175), (4225, 4693)]