21424120

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{5303}}^1$

素因数の和:5415

約数の個数: 32

約数和(自身を含む): 48690720

約数和(自身を除く): 27266600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 5303, 10606, 21212, 26515, 42424, 53030, 106060, 212120, 535603, 1071206, 2142412, 2678015, 4284824, 5356030, 10712060, 21424120]

約数ペア:

[(1, 21424120), (2, 10712060), (4, 5356030), (5, 4284824), (8, 2678015), (10, 2142412), (20, 1071206), (40, 535603), (101, 212120), (202, 106060), (404, 53030), (505, 42424), (808, 26515), (1010, 21212), (2020, 10606), (4040, 5303)]