21876868

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{257}}^1\times {\mathrm{1637}}^1$

素因数の和:1911

約数の個数: 24

約数和(自身を含む): 41415192

約数和(自身を除く): 19538324

約数列:

[1, 2, 4, 13, 26, 52, 257, 514, 1028, 1637, 3274, 3341, 6548, 6682, 13364, 21281, 42562, 85124, 420709, 841418, 1682836, 5469217, 10938434, 21876868]

約数ペア:

[(1, 21876868), (2, 10938434), (4, 5469217), (13, 1682836), (26, 841418), (52, 420709), (257, 85124), (514, 42562), (1028, 21281), (1637, 13364), (3274, 6682), (3341, 6548)]