21000201700

素因数分解:

$2^2\times 5^2\times {\mathrm{191}}^1\times {\mathrm{1099487}}^1$

素因数の和:1099692

約数の個数: 36

約数和(自身を含む): 45809068032

約数和(自身を除く): 24808866332

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 191, 382, 764, 955, 1910, 3820, 4775, 9550, 19100, 1099487, 2198974, 4397948, 5497435, 10994870, 21989740, 27487175, 54974350, 109948700, 210002017, 420004034, 840008068, 1050010085, 2100020170, 4200040340, 5250050425, 10500100850, 21000201700]

約数ペア:

[(1, 21000201700), (2, 10500100850), (4, 5250050425), (5, 4200040340), (10, 2100020170), (20, 1050010085), (25, 840008068), (50, 420004034), (100, 210002017), (191, 109948700), (382, 54974350), (764, 27487175), (955, 21989740), (1910, 10994870), (3820, 5497435), (4775, 4397948), (9550, 2198974), (19100, 1099487)]