16321480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{821}}^1$

素因数の和:910

約数の個数: 64

約数和(自身を含む): 42612480

約数和(自身を除く): 26291000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 71, 140, 142, 280, 284, 355, 497, 568, 710, 821, 994, 1420, 1642, 1988, 2485, 2840, 3284, 3976, 4105, 4970, 5747, 6568, 8210, 9940, 11494, 16420, 19880, 22988, 28735, 32840, 45976, 57470, 58291, 114940, 116582, 229880, 233164, 291455, 408037, 466328, 582910, 816074, 1165820, 1632148, 2040185, 2331640, 3264296, 4080370, 8160740, 16321480]

約数ペア:

[(1, 16321480), (2, 8160740), (4, 4080370), (5, 3264296), (7, 2331640), (8, 2040185), (10, 1632148), (14, 1165820), (20, 816074), (28, 582910), (35, 466328), (40, 408037), (56, 291455), (70, 233164), (71, 229880), (140, 116582), (142, 114940), (280, 58291), (284, 57470), (355, 45976), (497, 32840), (568, 28735), (710, 22988), (821, 19880), (994, 16420), (1420, 11494), (1642, 9940), (1988, 8210), (2485, 6568), (2840, 5747), (3284, 4970), (3976, 4105)]