20360680

素因数分解:

$2^3\times 5^1\times {\mathrm{521}}^1\times {\mathrm{977}}^1$

素因数の和:1509

約数の個数: 32

約数和(自身を含む): 45946440

約数和(自身を除く): 25585760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 521, 977, 1042, 1954, 2084, 2605, 3908, 4168, 4885, 5210, 7816, 9770, 10420, 19540, 20840, 39080, 509017, 1018034, 2036068, 2545085, 4072136, 5090170, 10180340, 20360680]

約数ペア:

[(1, 20360680), (2, 10180340), (4, 5090170), (5, 4072136), (8, 2545085), (10, 2036068), (20, 1018034), (40, 509017), (521, 39080), (977, 20840), (1042, 19540), (1954, 10420), (2084, 9770), (2605, 7816), (3908, 5210), (4168, 4885)]