20157285

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{647}}^1$

素因数の和:753

約数の個数: 32

約数和(自身を含む): 33841152

約数和(自身を除く): 13683867

約数列:

[1, 3, 5, 15, 31, 67, 93, 155, 201, 335, 465, 647, 1005, 1941, 2077, 3235, 6231, 9705, 10385, 20057, 31155, 43349, 60171, 100285, 130047, 216745, 300855, 650235, 1343819, 4031457, 6719095, 20157285]

約数ペア:

[(1, 20157285), (3, 6719095), (5, 4031457), (15, 1343819), (31, 650235), (67, 300855), (93, 216745), (155, 130047), (201, 100285), (335, 60171), (465, 43349), (647, 31155), (1005, 20057), (1941, 10385), (2077, 9705), (3235, 6231)]