20499836

素因数分解:

$2^2\times 7^2\times {\mathrm{41}}^1\times {\mathrm{2551}}^1$

素因数の和:2610

約数の個数: 36

約数和(自身を含む): 42766416

約数和(自身を除く): 22266580

約数列:

[1, 2, 4, 7, 14, 28, 41, 49, 82, 98, 164, 196, 287, 574, 1148, 2009, 2551, 4018, 5102, 8036, 10204, 17857, 35714, 71428, 104591, 124999, 209182, 249998, 418364, 499996, 732137, 1464274, 2928548, 5124959, 10249918, 20499836]

約数ペア:

[(1, 20499836), (2, 10249918), (4, 5124959), (7, 2928548), (14, 1464274), (28, 732137), (41, 499996), (49, 418364), (82, 249998), (98, 209182), (164, 124999), (196, 104591), (287, 71428), (574, 35714), (1148, 17857), (2009, 10204), (2551, 8036), (4018, 5102)]