8897721

素因数分解:

$3^1\times 7^1\times {\mathrm{641}}^1\times {\mathrm{661}}^1$

素因数の和:1312

約数の個数: 16

約数和(自身を含む): 13600128

約数和(自身を除く): 4702407

約数列:

[1, 3, 7, 21, 641, 661, 1923, 1983, 4487, 4627, 13461, 13881, 423701, 1271103, 2965907, 8897721]

約数ペア:

[(1, 8897721), (3, 2965907), (7, 1271103), (21, 423701), (641, 13881), (661, 13461), (1923, 4627), (1983, 4487)]