20964385

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{379}}^1$

素因数の和:457

約数の個数: 32

約数和(自身を含む): 29111040

約数和(自身を除く): 8146655

約数列:

[1, 5, 13, 23, 37, 65, 115, 185, 299, 379, 481, 851, 1495, 1895, 2405, 4255, 4927, 8717, 11063, 14023, 24635, 43585, 55315, 70115, 113321, 182299, 322529, 566605, 911495, 1612645, 4192877, 20964385]

約数ペア:

[(1, 20964385), (5, 4192877), (13, 1612645), (23, 911495), (37, 566605), (65, 322529), (115, 182299), (185, 113321), (299, 70115), (379, 55315), (481, 43585), (851, 24635), (1495, 14023), (1895, 11063), (2405, 8717), (4255, 4927)]