21530401

素因数分解:

${\mathrm{19}}^3\times {\mathrm{43}}^1\times {\mathrm{73}}^1$

素因数の和:173

約数の個数: 16

約数和(自身を含む): 23573440

約数和(自身を除く): 2043039

約数列:

[1, 19, 43, 73, 361, 817, 1387, 3139, 6859, 15523, 26353, 59641, 294937, 500707, 1133179, 21530401]

約数ペア:

[(1, 21530401), (19, 1133179), (43, 500707), (73, 294937), (361, 59641), (817, 26353), (1387, 15523), (3139, 6859)]