21800450

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{199}}^1\times {\mathrm{313}}^1$

素因数の和:531

約数の個数: 48

約数和(自身を含む): 46723200

約数和(自身を除く): 24922750

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 50, 70, 175, 199, 313, 350, 398, 626, 995, 1393, 1565, 1990, 2191, 2786, 3130, 4382, 4975, 6965, 7825, 9950, 10955, 13930, 15650, 21910, 34825, 54775, 62287, 69650, 109550, 124574, 311435, 436009, 622870, 872018, 1557175, 2180045, 3114350, 4360090, 10900225, 21800450]

約数ペア:

[(1, 21800450), (2, 10900225), (5, 4360090), (7, 3114350), (10, 2180045), (14, 1557175), (25, 872018), (35, 622870), (50, 436009), (70, 311435), (175, 124574), (199, 109550), (313, 69650), (350, 62287), (398, 54775), (626, 34825), (995, 21910), (1393, 15650), (1565, 13930), (1990, 10955), (2191, 9950), (2786, 7825), (3130, 6965), (4382, 4975)]