65531420

素因数分解:

$2^2\times 5^1\times {\mathrm{401}}^1\times {\mathrm{8171}}^1$

素因数の和:8581

約数の個数: 24

約数和(自身を含む): 137976048

約数和(自身を除く): 72444628

約数列:

[1, 2, 4, 5, 10, 20, 401, 802, 1604, 2005, 4010, 8020, 8171, 16342, 32684, 40855, 81710, 163420, 3276571, 6553142, 13106284, 16382855, 32765710, 65531420]

約数ペア:

[(1, 65531420), (2, 32765710), (4, 16382855), (5, 13106284), (10, 6553142), (20, 3276571), (401, 163420), (802, 81710), (1604, 40855), (2005, 32684), (4010, 16342), (8020, 8171)]