21418359

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{113}}^1$

素因数の和:247

約数の個数: 32

約数和(自身を含む): 31256064

約数和(自身を除く): 9837705

約数列:

[1, 3, 23, 41, 67, 69, 113, 123, 201, 339, 943, 1541, 2599, 2747, 2829, 4623, 4633, 7571, 7797, 8241, 13899, 22713, 63181, 106559, 174133, 189543, 310411, 319677, 522399, 931233, 7139453, 21418359]

約数ペア:

[(1, 21418359), (3, 7139453), (23, 931233), (41, 522399), (67, 319677), (69, 310411), (113, 189543), (123, 174133), (201, 106559), (339, 63181), (943, 22713), (1541, 13899), (2599, 8241), (2747, 7797), (2829, 7571), (4623, 4633)]