21981738

素因数分解:

$2^1\times 3^1\times {\mathrm{139}}^1\times {\mathrm{26357}}^1$

素因数の和:26501

約数の個数: 16

約数和(自身を含む): 44281440

約数和(自身を除く): 22299702

約数列:

[1, 2, 3, 6, 139, 278, 417, 834, 26357, 52714, 79071, 158142, 3663623, 7327246, 10990869, 21981738]

約数ペア:

[(1, 21981738), (2, 10990869), (3, 7327246), (6, 3663623), (139, 158142), (278, 79071), (417, 52714), (834, 26357)]