20193820

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{14221}}^1$

素因数の和:14301

約数の個数: 24

約数和(自身を含む): 43007328

約数和(自身を除く): 22813508

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 14221, 28442, 56884, 71105, 142210, 284420, 1009691, 2019382, 4038764, 5048455, 10096910, 20193820]

約数ペア:

[(1, 20193820), (2, 10096910), (4, 5048455), (5, 4038764), (10, 2019382), (20, 1009691), (71, 284420), (142, 142210), (284, 71105), (355, 56884), (710, 28442), (1420, 14221)]