1998200

素因数分解:

$2^3\times 5^2\times {\mathrm{97}}^1\times {\mathrm{103}}^1$

素因数の和:216

約数の個数: 48

約数和(自身を含む): 4739280

約数和(自身を除く): 2741080

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 97, 100, 103, 194, 200, 206, 388, 412, 485, 515, 776, 824, 970, 1030, 1940, 2060, 2425, 2575, 3880, 4120, 4850, 5150, 9700, 9991, 10300, 19400, 19982, 20600, 39964, 49955, 79928, 99910, 199820, 249775, 399640, 499550, 999100, 1998200]

約数ペア:

[(1, 1998200), (2, 999100), (4, 499550), (5, 399640), (8, 249775), (10, 199820), (20, 99910), (25, 79928), (40, 49955), (50, 39964), (97, 20600), (100, 19982), (103, 19400), (194, 10300), (200, 9991), (206, 9700), (388, 5150), (412, 4850), (485, 4120), (515, 3880), (776, 2575), (824, 2425), (970, 2060), (1030, 1940)]