20998500

素因数分解:

$2^2\times 3^1\times 5^3\times {\mathrm{13999}}^1$

素因数の和:14021

約数の個数: 48

約数和(自身を含む): 61152000

約数和(自身を除く): 40153500

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 50, 60, 75, 100, 125, 150, 250, 300, 375, 500, 750, 1500, 13999, 27998, 41997, 55996, 69995, 83994, 139990, 167988, 209985, 279980, 349975, 419970, 699950, 839940, 1049925, 1399900, 1749875, 2099850, 3499750, 4199700, 5249625, 6999500, 10499250, 20998500]

約数ペア:

[(1, 20998500), (2, 10499250), (3, 6999500), (4, 5249625), (5, 4199700), (6, 3499750), (10, 2099850), (12, 1749875), (15, 1399900), (20, 1049925), (25, 839940), (30, 699950), (50, 419970), (60, 349975), (75, 279980), (100, 209985), (125, 167988), (150, 139990), (250, 83994), (300, 69995), (375, 55996), (500, 41997), (750, 27998), (1500, 13999)]