20549480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{929}}^1$

素因数の和:1026

約数の個数: 64

約数和(自身を含む): 53568000

約数和(自身を除く): 33018520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 79, 140, 158, 280, 316, 395, 553, 632, 790, 929, 1106, 1580, 1858, 2212, 2765, 3160, 3716, 4424, 4645, 5530, 6503, 7432, 9290, 11060, 13006, 18580, 22120, 26012, 32515, 37160, 52024, 65030, 73391, 130060, 146782, 260120, 293564, 366955, 513737, 587128, 733910, 1027474, 1467820, 2054948, 2568685, 2935640, 4109896, 5137370, 10274740, 20549480]

約数ペア:

[(1, 20549480), (2, 10274740), (4, 5137370), (5, 4109896), (7, 2935640), (8, 2568685), (10, 2054948), (14, 1467820), (20, 1027474), (28, 733910), (35, 587128), (40, 513737), (56, 366955), (70, 293564), (79, 260120), (140, 146782), (158, 130060), (280, 73391), (316, 65030), (395, 52024), (553, 37160), (632, 32515), (790, 26012), (929, 22120), (1106, 18580), (1580, 13006), (1858, 11060), (2212, 9290), (2765, 7432), (3160, 6503), (3716, 5530), (4424, 4645)]