12797780

素因数分解:

$2^2\times 5^1\times {\mathrm{659}}^1\times {\mathrm{971}}^1$

素因数の和:1639

約数の個数: 24

約数和(自身を含む): 26943840

約数和(自身を除く): 14146060

約数列:

[1, 2, 4, 5, 10, 20, 659, 971, 1318, 1942, 2636, 3295, 3884, 4855, 6590, 9710, 13180, 19420, 639889, 1279778, 2559556, 3199445, 6398890, 12797780]

約数ペア:

[(1, 12797780), (2, 6398890), (4, 3199445), (5, 2559556), (10, 1279778), (20, 639889), (659, 19420), (971, 13180), (1318, 9710), (1942, 6590), (2636, 4855), (3295, 3884)]