21514479

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{7703}}^1$

素因数の和:7739

約数の個数: 24

約数和(自身を含む): 35130240

約数和(自身を除く): 13615761

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 399, 931, 2793, 7703, 23109, 53921, 146357, 161763, 377447, 439071, 1024499, 1132341, 3073497, 7171493, 21514479]

約数ペア:

[(1, 21514479), (3, 7171493), (7, 3073497), (19, 1132341), (21, 1024499), (49, 439071), (57, 377447), (133, 161763), (147, 146357), (399, 53921), (931, 23109), (2793, 7703)]