103757980

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{821}}^1$

素因数の和:990

約数の個数: 48

約数和(自身を含む): 223715520

約数和(自身を除く): 119957540

約数列:

[1, 2, 4, 5, 10, 20, 71, 89, 142, 178, 284, 355, 356, 445, 710, 821, 890, 1420, 1642, 1780, 3284, 4105, 6319, 8210, 12638, 16420, 25276, 31595, 58291, 63190, 73069, 116582, 126380, 146138, 233164, 291455, 292276, 365345, 582910, 730690, 1165820, 1461380, 5187899, 10375798, 20751596, 25939495, 51878990, 103757980]

約数ペア:

[(1, 103757980), (2, 51878990), (4, 25939495), (5, 20751596), (10, 10375798), (20, 5187899), (71, 1461380), (89, 1165820), (142, 730690), (178, 582910), (284, 365345), (355, 292276), (356, 291455), (445, 233164), (710, 146138), (821, 126380), (890, 116582), (1420, 73069), (1642, 63190), (1780, 58291), (3284, 31595), (4105, 25276), (6319, 16420), (8210, 12638)]