20178055

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^2$

素因数の和:199

約数の個数: 24

約数和(自身を含む): 26248320

約数和(自身を除く): 6070265

約数列:

[1, 5, 29, 31, 67, 145, 155, 335, 899, 1943, 2077, 4489, 4495, 9715, 10385, 22445, 60233, 130181, 139159, 301165, 650905, 695795, 4035611, 20178055]

約数ペア:

[(1, 20178055), (5, 4035611), (29, 695795), (31, 650905), (67, 301165), (145, 139159), (155, 130181), (335, 60233), (899, 22445), (1943, 10385), (2077, 9715), (4489, 4495)]