28202420

素因数分解:

$2^2\times 5^1\times {\mathrm{1129}}^1\times {\mathrm{1249}}^1$

素因数の和:2387

約数の個数: 24

約数和(自身を含む): 59325000

約数和(自身を除く): 31122580

約数列:

[1, 2, 4, 5, 10, 20, 1129, 1249, 2258, 2498, 4516, 4996, 5645, 6245, 11290, 12490, 22580, 24980, 1410121, 2820242, 5640484, 7050605, 14101210, 28202420]

約数ペア:

[(1, 28202420), (2, 14101210), (4, 7050605), (5, 5640484), (10, 2820242), (20, 1410121), (1129, 24980), (1249, 22580), (2258, 12490), (2498, 11290), (4516, 6245), (4996, 5645)]