20841320

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{30649}}^1$

素因数の和:30677

約数の個数: 32

約数和(自身を含む): 49653000

約数和(自身を除く): 28811680

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 30649, 61298, 122596, 153245, 245192, 306490, 521033, 612980, 1042066, 1225960, 2084132, 2605165, 4168264, 5210330, 10420660, 20841320]

約数ペア:

[(1, 20841320), (2, 10420660), (4, 5210330), (5, 4168264), (8, 2605165), (10, 2084132), (17, 1225960), (20, 1042066), (34, 612980), (40, 521033), (68, 306490), (85, 245192), (136, 153245), (170, 122596), (340, 61298), (680, 30649)]