20780051025

素因数分解:

$3^1\times 5^2\times {\mathrm{71}}^1\times {\mathrm{227}}^1\times {\mathrm{17191}}^1$

素因数の和:17502

約数の個数: 48

約数和(自身を含む): 34995760128

約数和(自身を除く): 14215709103

約数列:

[1, 3, 5, 15, 25, 71, 75, 213, 227, 355, 681, 1065, 1135, 1775, 3405, 5325, 5675, 16117, 17025, 17191, 48351, 51573, 80585, 85955, 241755, 257865, 402925, 429775, 1208775, 1220561, 1289325, 3661683, 3902357, 6102805, 11707071, 18308415, 19511785, 30514025, 58535355, 91542075, 97558925, 277067347, 292676775, 831202041, 1385336735, 4156010205, 6926683675, 20780051025]

約数ペア:

[(1, 20780051025), (3, 6926683675), (5, 4156010205), (15, 1385336735), (25, 831202041), (71, 292676775), (75, 277067347), (213, 97558925), (227, 91542075), (355, 58535355), (681, 30514025), (1065, 19511785), (1135, 18308415), (1775, 11707071), (3405, 6102805), (5325, 3902357), (5675, 3661683), (16117, 1289325), (17025, 1220561), (17191, 1208775), (48351, 429775), (51573, 402925), (80585, 257865), (85955, 241755)]