21376240

素因数分解:

$2^4\times 5^1\times {\mathrm{267203}}^1$

素因数の和:267216

約数の個数: 20

約数和(自身を含む): 49699944

約数和(自身を除く): 28323704

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 267203, 534406, 1068812, 1336015, 2137624, 2672030, 4275248, 5344060, 10688120, 21376240]

約数ペア:

[(1, 21376240), (2, 10688120), (4, 5344060), (5, 4275248), (8, 2672030), (10, 2137624), (16, 1336015), (20, 1068812), (40, 534406), (80, 267203)]