21103840

素因数分解:

$2^5\times 5^1\times {\mathrm{131899}}^1$

素因数の和:131914

約数の個数: 24

約数和(自身を含む): 49858200

約数和(自身を除く): 28754360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 131899, 263798, 527596, 659495, 1055192, 1318990, 2110384, 2637980, 4220768, 5275960, 10551920, 21103840]

約数ペア:

[(1, 21103840), (2, 10551920), (4, 5275960), (5, 4220768), (8, 2637980), (10, 2110384), (16, 1318990), (20, 1055192), (32, 659495), (40, 527596), (80, 263798), (160, 131899)]