22138750

素因数分解:

$2^1\times 5^4\times {\mathrm{89}}^1\times {\mathrm{199}}^1$

素因数の和:310

約数の個数: 40

約数和(自身を含む): 42174000

約数和(自身を除く): 20035250

約数列:

[1, 2, 5, 10, 25, 50, 89, 125, 178, 199, 250, 398, 445, 625, 890, 995, 1250, 1990, 2225, 4450, 4975, 9950, 11125, 17711, 22250, 24875, 35422, 49750, 55625, 88555, 111250, 124375, 177110, 248750, 442775, 885550, 2213875, 4427750, 11069375, 22138750]

約数ペア:

[(1, 22138750), (2, 11069375), (5, 4427750), (10, 2213875), (25, 885550), (50, 442775), (89, 248750), (125, 177110), (178, 124375), (199, 111250), (250, 88555), (398, 55625), (445, 49750), (625, 35422), (890, 24875), (995, 22250), (1250, 17711), (1990, 11125), (2225, 9950), (4450, 4975)]