16939990

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{251}}^1\times {\mathrm{397}}^1$

素因数の和:672

約数の個数: 32

約数和(自身を含む): 32495904

約数和(自身を除く): 15555914

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 251, 397, 502, 794, 1255, 1985, 2510, 3970, 4267, 6749, 8534, 13498, 21335, 33745, 42670, 67490, 99647, 199294, 498235, 996470, 1693999, 3387998, 8469995, 16939990]

約数ペア:

[(1, 16939990), (2, 8469995), (5, 3387998), (10, 1693999), (17, 996470), (34, 498235), (85, 199294), (170, 99647), (251, 67490), (397, 42670), (502, 33745), (794, 21335), (1255, 13498), (1985, 8534), (2510, 6749), (3970, 4267)]