40019900

素因数分解:

$2^2\times 5^2\times {\mathrm{400199}}^1$

素因数の和:400213

約数の個数: 18

約数和(自身を含む): 86843400

約数和(自身を除く): 46823500

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 400199, 800398, 1600796, 2000995, 4001990, 8003980, 10004975, 20009950, 40019900]

約数ペア:

[(1, 40019900), (2, 20009950), (4, 10004975), (5, 8003980), (10, 4001990), (20, 2000995), (25, 1600796), (50, 800398), (100, 400199)]