21247304

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{204301}}^1$

素因数の和:204320

約数の個数: 16

約数和(自身を含む): 42903420

約数和(自身を除く): 21656116

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 204301, 408602, 817204, 1634408, 2655913, 5311826, 10623652, 21247304]

約数ペア:

[(1, 21247304), (2, 10623652), (4, 5311826), (8, 2655913), (13, 1634408), (26, 817204), (52, 408602), (104, 204301)]