21149080

素因数分解:

$2^3\times 5^1\times {\mathrm{113}}^1\times {\mathrm{4679}}^1$

素因数の和:4803

約数の個数: 32

約数和(自身を含む): 48016800

約数和(自身を除く): 26867720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 113, 226, 452, 565, 904, 1130, 2260, 4520, 4679, 9358, 18716, 23395, 37432, 46790, 93580, 187160, 528727, 1057454, 2114908, 2643635, 4229816, 5287270, 10574540, 21149080]

約数ペア:

[(1, 21149080), (2, 10574540), (4, 5287270), (5, 4229816), (8, 2643635), (10, 2114908), (20, 1057454), (40, 528727), (113, 187160), (226, 93580), (452, 46790), (565, 37432), (904, 23395), (1130, 18716), (2260, 9358), (4520, 4679)]