19919940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{331999}}^1$

素因数の和:332011

約数の個数: 24

約数和(自身を含む): 55776000

約数和(自身を除く): 35856060

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 331999, 663998, 995997, 1327996, 1659995, 1991994, 3319990, 3983988, 4979985, 6639980, 9959970, 19919940]

約数ペア:

[(1, 19919940), (2, 9959970), (3, 6639980), (4, 4979985), (5, 3983988), (6, 3319990), (10, 1991994), (12, 1659995), (15, 1327996), (20, 995997), (30, 663998), (60, 331999)]