21690634

素因数分解:

$2^1\times 7^4\times {\mathrm{4517}}^1$

素因数の和:4547

約数の個数: 20

約数和(自身を含む): 37964754

約数和(自身を除く): 16274120

約数列:

[1, 2, 7, 14, 49, 98, 343, 686, 2401, 4517, 4802, 9034, 31619, 63238, 221333, 442666, 1549331, 3098662, 10845317, 21690634]

約数ペア:

[(1, 21690634), (2, 10845317), (7, 3098662), (14, 1549331), (49, 442666), (98, 221333), (343, 63238), (686, 31619), (2401, 9034), (4517, 4802)]