21717428

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{4001}}^1$

素因数の和:4087

約数の個数: 24

約数和(自身を含む): 40340160

約数和(自身を除く): 18622732

約数列:

[1, 2, 4, 23, 46, 59, 92, 118, 236, 1357, 2714, 4001, 5428, 8002, 16004, 92023, 184046, 236059, 368092, 472118, 944236, 5429357, 10858714, 21717428]

約数ペア:

[(1, 21717428), (2, 10858714), (4, 5429357), (23, 944236), (46, 472118), (59, 368092), (92, 236059), (118, 184046), (236, 92023), (1357, 16004), (2714, 8002), (4001, 5428)]