21209838

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^3\times {\mathrm{1609}}^1$

素因数の和:1653

約数の個数: 32

約数和(自身を含む): 45981600

約数和(自身を除く): 24771762

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 169, 338, 507, 1014, 1609, 2197, 3218, 4394, 4827, 6591, 9654, 13182, 20917, 41834, 62751, 125502, 271921, 543842, 815763, 1631526, 3534973, 7069946, 10604919, 21209838]

約数ペア:

[(1, 21209838), (2, 10604919), (3, 7069946), (6, 3534973), (13, 1631526), (26, 815763), (39, 543842), (78, 271921), (169, 125502), (338, 62751), (507, 41834), (1014, 20917), (1609, 13182), (2197, 9654), (3218, 6591), (4394, 4827)]