9890120

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{2549}}^1$

素因数の和:2657

約数の個数: 32

約数和(自身を含む): 22491000

約数和(自身を除く): 12600880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 2549, 3880, 5098, 10196, 12745, 20392, 25490, 50980, 101960, 247253, 494506, 989012, 1236265, 1978024, 2472530, 4945060, 9890120]

約数ペア:

[(1, 9890120), (2, 4945060), (4, 2472530), (5, 1978024), (8, 1236265), (10, 989012), (20, 494506), (40, 247253), (97, 101960), (194, 50980), (388, 25490), (485, 20392), (776, 12745), (970, 10196), (1940, 5098), (2549, 3880)]