68866120

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{17749}}^1$

素因数の和:17857

約数の個数: 32

約数和(自身を含む): 156555000

約数和(自身を除く): 87688880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 17749, 35498, 70996, 88745, 141992, 177490, 354980, 709960, 1721653, 3443306, 6886612, 8608265, 13773224, 17216530, 34433060, 68866120]

約数ペア:

[(1, 68866120), (2, 34433060), (4, 17216530), (5, 13773224), (8, 8608265), (10, 6886612), (20, 3443306), (40, 1721653), (97, 709960), (194, 354980), (388, 177490), (485, 141992), (776, 88745), (970, 70996), (1940, 35498), (3880, 17749)]