21793820

素因数分解:

$2^2\times 5^1\times {\mathrm{271}}^1\times {\mathrm{4021}}^1$

素因数の和:4301

約数の個数: 24

約数和(自身を含む): 45947328

約数和(自身を除く): 24153508

約数列:

[1, 2, 4, 5, 10, 20, 271, 542, 1084, 1355, 2710, 4021, 5420, 8042, 16084, 20105, 40210, 80420, 1089691, 2179382, 4358764, 5448455, 10896910, 21793820]

約数ペア:

[(1, 21793820), (2, 10896910), (4, 5448455), (5, 4358764), (10, 2179382), (20, 1089691), (271, 80420), (542, 40210), (1084, 20105), (1355, 16084), (2710, 8042), (4021, 5420)]