12815780

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{15629}}^1$

素因数の和:15679

約数の個数: 24

約数和(自身を含む): 27571320

約数和(自身を除く): 14755540

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 15629, 31258, 62516, 78145, 156290, 312580, 640789, 1281578, 2563156, 3203945, 6407890, 12815780]

約数ペア:

[(1, 12815780), (2, 6407890), (4, 3203945), (5, 2563156), (10, 1281578), (20, 640789), (41, 312580), (82, 156290), (164, 78145), (205, 62516), (410, 31258), (820, 15629)]