20764947

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{167}}^1\times {\mathrm{191}}^1$

素因数の和:399

約数の個数: 32

約数和(自身を含む): 33030144

約数和(自身を除く): 12265197

約数列:

[1, 3, 7, 21, 31, 93, 167, 191, 217, 501, 573, 651, 1169, 1337, 3507, 4011, 5177, 5921, 15531, 17763, 31897, 36239, 41447, 95691, 108717, 124341, 223279, 669837, 988807, 2966421, 6921649, 20764947]

約数ペア:

[(1, 20764947), (3, 6921649), (7, 2966421), (21, 988807), (31, 669837), (93, 223279), (167, 124341), (191, 108717), (217, 95691), (501, 41447), (573, 36239), (651, 31897), (1169, 17763), (1337, 15531), (3507, 5921), (4011, 5177)]