20264775

素因数分解:

$3^1\times 5^2\times {\mathrm{157}}^1\times {\mathrm{1721}}^1$

素因数の和:1891

約数の個数: 24

約数和(自身を含む): 33737424

約数和(自身を除く): 13472649

約数列:

[1, 3, 5, 15, 25, 75, 157, 471, 785, 1721, 2355, 3925, 5163, 8605, 11775, 25815, 43025, 129075, 270197, 810591, 1350985, 4052955, 6754925, 20264775]

約数ペア:

[(1, 20264775), (3, 6754925), (5, 4052955), (15, 1350985), (25, 810591), (75, 270197), (157, 129075), (471, 43025), (785, 25815), (1721, 11775), (2355, 8605), (3925, 5163)]