20458970

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{971}}^1$

素因数の和:1035

約数の個数: 48

約数和(自身を含む): 43879968

約数和(自身を除く): 23420998

約数列:

[1, 2, 5, 7, 10, 14, 35, 43, 49, 70, 86, 98, 215, 245, 301, 430, 490, 602, 971, 1505, 1942, 2107, 3010, 4214, 4855, 6797, 9710, 10535, 13594, 21070, 33985, 41753, 47579, 67970, 83506, 95158, 208765, 237895, 292271, 417530, 475790, 584542, 1461355, 2045897, 2922710, 4091794, 10229485, 20458970]

約数ペア:

[(1, 20458970), (2, 10229485), (5, 4091794), (7, 2922710), (10, 2045897), (14, 1461355), (35, 584542), (43, 475790), (49, 417530), (70, 292271), (86, 237895), (98, 208765), (215, 95158), (245, 83506), (301, 67970), (430, 47579), (490, 41753), (602, 33985), (971, 21070), (1505, 13594), (1942, 10535), (2107, 9710), (3010, 6797), (4214, 4855)]