21047980

素因数分解:

$2^2\times 5^1\times {\mathrm{463}}^1\times {\mathrm{2273}}^1$

素因数の和:2745

約数の個数: 24

約数和(自身を含む): 44315712

約数和(自身を除く): 23267732

約数列:

[1, 2, 4, 5, 10, 20, 463, 926, 1852, 2273, 2315, 4546, 4630, 9092, 9260, 11365, 22730, 45460, 1052399, 2104798, 4209596, 5261995, 10523990, 21047980]

約数ペア:

[(1, 21047980), (2, 10523990), (4, 5261995), (5, 4209596), (10, 2104798), (20, 1052399), (463, 45460), (926, 22730), (1852, 11365), (2273, 9260), (2315, 9092), (4546, 4630)]