1211431678

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{449011}}^1$

素因数の和:449103

約数の個数: 16

約数和(自身を含む): 1939731840

約数和(自身を除く): 728300162

約数列:

[1, 2, 19, 38, 71, 142, 1349, 2698, 449011, 898022, 8531209, 17062418, 31879781, 63759562, 605715839, 1211431678]

約数ペア:

[(1, 1211431678), (2, 605715839), (19, 63759562), (38, 31879781), (71, 17062418), (142, 8531209), (1349, 898022), (2698, 449011)]