21691360

素因数分解:

$2^5\times 5^1\times {\mathrm{135571}}^1$

素因数の和:135586

約数の個数: 24

約数和(自身を含む): 51246216

約数和(自身を除く): 29554856

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 135571, 271142, 542284, 677855, 1084568, 1355710, 2169136, 2711420, 4338272, 5422840, 10845680, 21691360]

約数ペア:

[(1, 21691360), (2, 10845680), (4, 5422840), (5, 4338272), (8, 2711420), (10, 2169136), (16, 1355710), (20, 1084568), (32, 677855), (40, 542284), (80, 271142), (160, 135571)]