21328251

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{59743}}^1$

素因数の和:59770

約数の個数: 16

約数和(自身を含む): 34412544

約数和(自身を除く): 13084293

約数列:

[1, 3, 7, 17, 21, 51, 119, 357, 59743, 179229, 418201, 1015631, 1254603, 3046893, 7109417, 21328251]

約数ペア:

[(1, 21328251), (3, 7109417), (7, 3046893), (17, 1254603), (21, 1015631), (51, 418201), (119, 179229), (357, 59743)]