20210872780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{2033287}}^1$

素因数の和:2033374

約数の個数: 48

約数和(自身を含む): 49189303296

約数和(自身を除く): 28978430516

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1988, 2485, 4970, 9940, 2033287, 4066574, 8133148, 10166435, 14233009, 20332870, 28466018, 40665740, 56932036, 71165045, 142330090, 144363377, 284660180, 288726754, 577453508, 721816885, 1010543639, 1443633770, 2021087278, 2887267540, 4042174556, 5052718195, 10105436390, 20210872780]

約数ペア:

[(1, 20210872780), (2, 10105436390), (4, 5052718195), (5, 4042174556), (7, 2887267540), (10, 2021087278), (14, 1443633770), (20, 1010543639), (28, 721816885), (35, 577453508), (70, 288726754), (71, 284660180), (140, 144363377), (142, 142330090), (284, 71165045), (355, 56932036), (497, 40665740), (710, 28466018), (994, 20332870), (1420, 14233009), (1988, 10166435), (2485, 8133148), (4970, 4066574), (9940, 2033287)]