1311005240

素因数分解:

$2^3\times 5^1\times {\mathrm{32775131}}^1$

素因数の和:32775142

約数の個数: 16

約数和(自身を含む): 2949761880

約数和(自身を除く): 1638756640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 32775131, 65550262, 131100524, 163875655, 262201048, 327751310, 655502620, 1311005240]

約数ペア:

[(1, 1311005240), (2, 655502620), (4, 327751310), (5, 262201048), (8, 163875655), (10, 131100524), (20, 65550262), (40, 32775131)]