18398480

素因数分解:

$2^4\times 5^1\times {\mathrm{229981}}^1$

素因数の和:229994

約数の個数: 20

約数和(自身を含む): 42776652

約数和(自身を除く): 24378172

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 229981, 459962, 919924, 1149905, 1839848, 2299810, 3679696, 4599620, 9199240, 18398480]

約数ペア:

[(1, 18398480), (2, 9199240), (4, 4599620), (5, 3679696), (8, 2299810), (10, 1839848), (16, 1149905), (20, 919924), (40, 459962), (80, 229981)]