209956740

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{499897}}^1$

素因数の和:499916

約数の個数: 48

約数和(自身を含む): 671862912

約数和(自身を除く): 461906172

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 499897, 999794, 1499691, 1999588, 2499485, 2999382, 3499279, 4998970, 5998764, 6998558, 7498455, 9997940, 10497837, 13997116, 14996910, 17496395, 20995674, 29993820, 34992790, 41991348, 52489185, 69985580, 104978370, 209956740]

約数ペア:

[(1, 209956740), (2, 104978370), (3, 69985580), (4, 52489185), (5, 41991348), (6, 34992790), (7, 29993820), (10, 20995674), (12, 17496395), (14, 14996910), (15, 13997116), (20, 10497837), (21, 9997940), (28, 7498455), (30, 6998558), (35, 5998764), (42, 4998970), (60, 3499279), (70, 2999382), (84, 2499485), (105, 1999588), (140, 1499691), (210, 999794), (420, 499897)]