18400240

素因数分解:

$2^4\times 5^1\times {\mathrm{230003}}^1$

素因数の和:230016

約数の個数: 20

約数和(自身を含む): 42780744

約数和(自身を除く): 24380504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 230003, 460006, 920012, 1150015, 1840024, 2300030, 3680048, 4600060, 9200120, 18400240]

約数ペア:

[(1, 18400240), (2, 9200120), (4, 4600060), (5, 3680048), (8, 2300030), (10, 1840024), (16, 1150015), (20, 920012), (40, 460006), (80, 230003)]