21652947

素因数分解:

$3^3\times {\mathrm{47}}^1\times {\mathrm{113}}^1\times {\mathrm{151}}^1$

素因数の和:320

約数の個数: 32

約数和(自身を含む): 33269760

約数和(自身を除く): 11616813

約数列:

[1, 3, 9, 27, 47, 113, 141, 151, 339, 423, 453, 1017, 1269, 1359, 3051, 4077, 5311, 7097, 15933, 17063, 21291, 47799, 51189, 63873, 143397, 153567, 191619, 460701, 801961, 2405883, 7217649, 21652947]

約数ペア:

[(1, 21652947), (3, 7217649), (9, 2405883), (27, 801961), (47, 460701), (113, 191619), (141, 153567), (151, 143397), (339, 63873), (423, 51189), (453, 47799), (1017, 21291), (1269, 17063), (1359, 15933), (3051, 7097), (4077, 5311)]