21551117

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{1231}}^1$

素因数の和:1340

約数の個数: 16

約数和(自身を含む): 25665024

約数和(自身を除く): 4113907

約数列:

[1, 7, 41, 61, 287, 427, 1231, 2501, 8617, 17507, 50471, 75091, 353297, 525637, 3078731, 21551117]

約数ペア:

[(1, 21551117), (7, 3078731), (41, 525637), (61, 353297), (287, 75091), (427, 50471), (1231, 17507), (2501, 8617)]