21004450

素因数分解:

$2^1\times 5^2\times {\mathrm{199}}^1\times {\mathrm{2111}}^1$

素因数の和:2322

約数の個数: 24

約数和(自身を含む): 39283200

約数和(自身を除く): 18278750

約数列:

[1, 2, 5, 10, 25, 50, 199, 398, 995, 1990, 2111, 4222, 4975, 9950, 10555, 21110, 52775, 105550, 420089, 840178, 2100445, 4200890, 10502225, 21004450]

約数ペア:

[(1, 21004450), (2, 10502225), (5, 4200890), (10, 2100445), (25, 840178), (50, 420089), (199, 105550), (398, 52775), (995, 21110), (1990, 10555), (2111, 9950), (4222, 4975)]