21577731

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{19387}}^1$

素因数の和:19450

約数の個数: 16

約数和(自身を含む): 33502464

約数和(自身を除く): 11924733

約数列:

[1, 3, 7, 21, 53, 159, 371, 1113, 19387, 58161, 135709, 407127, 1027511, 3082533, 7192577, 21577731]

約数ペア:

[(1, 21577731), (3, 7192577), (7, 3082533), (21, 1027511), (53, 407127), (159, 135709), (371, 58161), (1113, 19387)]