28480780

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{211}}^1\times {\mathrm{397}}^1$

素因数の和:634

約数の個数: 48

約数和(自身を含む): 63788256

約数和(自身を除く): 35307476

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 211, 340, 397, 422, 794, 844, 1055, 1588, 1985, 2110, 3587, 3970, 4220, 6749, 7174, 7940, 13498, 14348, 17935, 26996, 33745, 35870, 67490, 71740, 83767, 134980, 167534, 335068, 418835, 837670, 1424039, 1675340, 2848078, 5696156, 7120195, 14240390, 28480780]

約数ペア:

[(1, 28480780), (2, 14240390), (4, 7120195), (5, 5696156), (10, 2848078), (17, 1675340), (20, 1424039), (34, 837670), (68, 418835), (85, 335068), (170, 167534), (211, 134980), (340, 83767), (397, 71740), (422, 67490), (794, 35870), (844, 33745), (1055, 26996), (1588, 17935), (1985, 14348), (2110, 13498), (3587, 7940), (3970, 7174), (4220, 6749)]