21117080

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{5227}}^1$

素因数の和:5339

約数の個数: 32

約数和(自身を含む): 47993040

約数和(自身を除く): 26875960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 5227, 10454, 20908, 26135, 41816, 52270, 104540, 209080, 527927, 1055854, 2111708, 2639635, 4223416, 5279270, 10558540, 21117080]

約数ペア:

[(1, 21117080), (2, 10558540), (4, 5279270), (5, 4223416), (8, 2639635), (10, 2111708), (20, 1055854), (40, 527927), (101, 209080), (202, 104540), (404, 52270), (505, 41816), (808, 26135), (1010, 20908), (2020, 10454), (4040, 5227)]