28357340

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{821}}^1$

素因数の和:998

約数の個数: 48

約数和(自身を含む): 65457504

約数和(自身を除く): 37100164

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 157, 220, 314, 628, 785, 821, 1570, 1642, 1727, 3140, 3284, 3454, 4105, 6908, 8210, 8635, 9031, 16420, 17270, 18062, 34540, 36124, 45155, 90310, 128897, 180620, 257794, 515588, 644485, 1288970, 1417867, 2577940, 2835734, 5671468, 7089335, 14178670, 28357340]

約数ペア:

[(1, 28357340), (2, 14178670), (4, 7089335), (5, 5671468), (10, 2835734), (11, 2577940), (20, 1417867), (22, 1288970), (44, 644485), (55, 515588), (110, 257794), (157, 180620), (220, 128897), (314, 90310), (628, 45155), (785, 36124), (821, 34540), (1570, 18062), (1642, 17270), (1727, 16420), (3140, 9031), (3284, 8635), (3454, 8210), (4105, 6908)]