21000261820

素因数分解:

$2^2\times 5^1\times {\mathrm{17749}}^1\times {\mathrm{59159}}^1$

素因数の和:76917

約数の個数: 24

約数和(自身を含む): 44103780000

約数和(自身を除く): 23103518180

約数列:

[1, 2, 4, 5, 10, 20, 17749, 35498, 59159, 70996, 88745, 118318, 177490, 236636, 295795, 354980, 591590, 1183180, 1050013091, 2100026182, 4200052364, 5250065455, 10500130910, 21000261820]

約数ペア:

[(1, 21000261820), (2, 10500130910), (4, 5250065455), (5, 4200052364), (10, 2100026182), (20, 1050013091), (17749, 1183180), (35498, 591590), (59159, 354980), (70996, 295795), (88745, 236636), (118318, 177490)]