21408724

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{4211}}^1$

素因数の和:4287

約数の個数: 24

約数和(自身を含む): 39626496

約数和(自身を除く): 18217772

約数列:

[1, 2, 4, 31, 41, 62, 82, 124, 164, 1271, 2542, 4211, 5084, 8422, 16844, 130541, 172651, 261082, 345302, 522164, 690604, 5352181, 10704362, 21408724]

約数ペア:

[(1, 21408724), (2, 10704362), (4, 5352181), (31, 690604), (41, 522164), (62, 345302), (82, 261082), (124, 172651), (164, 130541), (1271, 16844), (2542, 8422), (4211, 5084)]