15387625

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{31}}^1$

素因数の和:95

約数の個数: 48

約数和(自身を含む): 22823424

約数和(自身を除く): 7435799

約数列:

[1, 5, 11, 19, 25, 31, 55, 95, 125, 155, 209, 275, 341, 361, 475, 589, 775, 1045, 1375, 1705, 1805, 2375, 2945, 3875, 3971, 5225, 6479, 8525, 9025, 11191, 14725, 19855, 26125, 32395, 42625, 45125, 55955, 73625, 99275, 123101, 161975, 279775, 496375, 615505, 809875, 1398875, 3077525, 15387625]

約数ペア:

[(1, 15387625), (5, 3077525), (11, 1398875), (19, 809875), (25, 615505), (31, 496375), (55, 279775), (95, 161975), (125, 123101), (155, 99275), (209, 73625), (275, 55955), (341, 45125), (361, 42625), (475, 32395), (589, 26125), (775, 19855), (1045, 14725), (1375, 11191), (1705, 9025), (1805, 8525), (2375, 6479), (2945, 5225), (3875, 3971)]