19906705

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{653}}^1$

素因数の和:745

約数の個数: 32

約数和(自身を含む): 29885184

約数和(自身を除く): 9978479

約数列:

[1, 5, 7, 13, 35, 65, 67, 91, 335, 455, 469, 653, 871, 2345, 3265, 4355, 4571, 6097, 8489, 22855, 30485, 42445, 43751, 59423, 218755, 297115, 306257, 568763, 1531285, 2843815, 3981341, 19906705]

約数ペア:

[(1, 19906705), (5, 3981341), (7, 2843815), (13, 1531285), (35, 568763), (65, 306257), (67, 297115), (91, 218755), (335, 59423), (455, 43751), (469, 42445), (653, 30485), (871, 22855), (2345, 8489), (3265, 6097), (4355, 4571)]