21141320

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{5233}}^1$

素因数の和:5345

約数の個数: 32

約数和(自身を含む): 48048120

約数和(自身を除く): 26906800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 5233, 10466, 20932, 26165, 41864, 52330, 104660, 209320, 528533, 1057066, 2114132, 2642665, 4228264, 5285330, 10570660, 21141320]

約数ペア:

[(1, 21141320), (2, 10570660), (4, 5285330), (5, 4228264), (8, 2642665), (10, 2114132), (20, 1057066), (40, 528533), (101, 209320), (202, 104660), (404, 52330), (505, 41864), (808, 26165), (1010, 20932), (2020, 10466), (4040, 5233)]