20527780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{11279}}^1$

素因数の和:11308

約数の個数: 48

約数和(自身を含む): 53061120

約数和(自身を除く): 32533340

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 11279, 22558, 45116, 56395, 78953, 112790, 146627, 157906, 225580, 293254, 315812, 394765, 586508, 733135, 789530, 1026389, 1466270, 1579060, 2052778, 2932540, 4105556, 5131945, 10263890, 20527780]

約数ペア:

[(1, 20527780), (2, 10263890), (4, 5131945), (5, 4105556), (7, 2932540), (10, 2052778), (13, 1579060), (14, 1466270), (20, 1026389), (26, 789530), (28, 733135), (35, 586508), (52, 394765), (65, 315812), (70, 293254), (91, 225580), (130, 157906), (140, 146627), (182, 112790), (260, 78953), (364, 56395), (455, 45116), (910, 22558), (1820, 11279)]