21971420

素因数分解:

$2^2\times 5^1\times {\mathrm{631}}^1\times {\mathrm{1741}}^1$

素因数の和:2381

約数の個数: 24

約数和(自身を含む): 46239648

約数和(自身を除く): 24268228

約数列:

[1, 2, 4, 5, 10, 20, 631, 1262, 1741, 2524, 3155, 3482, 6310, 6964, 8705, 12620, 17410, 34820, 1098571, 2197142, 4394284, 5492855, 10985710, 21971420]

約数ペア:

[(1, 21971420), (2, 10985710), (4, 5492855), (5, 4394284), (10, 2197142), (20, 1098571), (631, 34820), (1262, 17410), (1741, 12620), (2524, 8705), (3155, 6964), (3482, 6310)]