2019979820

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1422521}}^1$

素因数の和:1422601

約数の個数: 24

約数和(自身を含む): 4301706528

約数和(自身を除く): 2281726708

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 1422521, 2845042, 5690084, 7112605, 14225210, 28450420, 100998991, 201997982, 403995964, 504994955, 1009989910, 2019979820]

約数ペア:

[(1, 2019979820), (2, 1009989910), (4, 504994955), (5, 403995964), (10, 201997982), (20, 100998991), (71, 28450420), (142, 14225210), (284, 7112605), (355, 5690084), (710, 2845042), (1420, 1422521)]