21000365580

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{137}}^1\times {\mathrm{2554789}}^1$

素因数の和:2554938

約数の個数: 48

約数和(自身を含む): 59230251360

約数和(自身を除く): 38229885780

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 137, 274, 411, 548, 685, 822, 1370, 1644, 2055, 2740, 4110, 8220, 2554789, 5109578, 7664367, 10219156, 12773945, 15328734, 25547890, 30657468, 38321835, 51095780, 76643670, 153287340, 350006093, 700012186, 1050018279, 1400024372, 1750030465, 2100036558, 3500060930, 4200073116, 5250091395, 7000121860, 10500182790, 21000365580]

約数ペア:

[(1, 21000365580), (2, 10500182790), (3, 7000121860), (4, 5250091395), (5, 4200073116), (6, 3500060930), (10, 2100036558), (12, 1750030465), (15, 1400024372), (20, 1050018279), (30, 700012186), (60, 350006093), (137, 153287340), (274, 76643670), (411, 51095780), (548, 38321835), (685, 30657468), (822, 25547890), (1370, 15328734), (1644, 12773945), (2055, 10219156), (2740, 7664367), (4110, 5109578), (8220, 2554789)]