21500031

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{24971}}^1$

素因数の和:25022

約数の個数: 16

約数和(自身を含む): 33562368

約数和(自身を除く): 12062337

約数列:

[1, 3, 7, 21, 41, 123, 287, 861, 24971, 74913, 174797, 524391, 1023811, 3071433, 7166677, 21500031]

約数ペア:

[(1, 21500031), (3, 7166677), (7, 3071433), (21, 1023811), (41, 524391), (123, 174797), (287, 74913), (861, 24971)]