20320725

素因数分解:

$3^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{6301}}^1$

素因数の和:6357

約数の個数: 24

約数和(自身を含む): 34383712

約数和(自身を除く): 14062987

約数列:

[1, 3, 5, 15, 25, 43, 75, 129, 215, 645, 1075, 3225, 6301, 18903, 31505, 94515, 157525, 270943, 472575, 812829, 1354715, 4064145, 6773575, 20320725]

約数ペア:

[(1, 20320725), (3, 6773575), (5, 4064145), (15, 1354715), (25, 812829), (43, 472575), (75, 270943), (129, 157525), (215, 94515), (645, 31505), (1075, 18903), (3225, 6301)]