19764920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{70589}}^1$

素因数の和:70607

約数の個数: 32

約数和(自身を含む): 50824800

約数和(自身を除く): 31059880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 70589, 141178, 282356, 352945, 494123, 564712, 705890, 988246, 1411780, 1976492, 2470615, 2823560, 3952984, 4941230, 9882460, 19764920]

約数ペア:

[(1, 19764920), (2, 9882460), (4, 4941230), (5, 3952984), (7, 2823560), (8, 2470615), (10, 1976492), (14, 1411780), (20, 988246), (28, 705890), (35, 564712), (40, 494123), (56, 352945), (70, 282356), (140, 141178), (280, 70589)]