15939980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{2777}}^1$

素因数の和:2834

約数の個数: 48

約数和(自身を含む): 39203136

約数和(自身を除く): 23263156

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 41, 70, 82, 140, 164, 205, 287, 410, 574, 820, 1148, 1435, 2777, 2870, 5554, 5740, 11108, 13885, 19439, 27770, 38878, 55540, 77756, 97195, 113857, 194390, 227714, 388780, 455428, 569285, 796999, 1138570, 1593998, 2277140, 3187996, 3984995, 7969990, 15939980]

約数ペア:

[(1, 15939980), (2, 7969990), (4, 3984995), (5, 3187996), (7, 2277140), (10, 1593998), (14, 1138570), (20, 796999), (28, 569285), (35, 455428), (41, 388780), (70, 227714), (82, 194390), (140, 113857), (164, 97195), (205, 77756), (287, 55540), (410, 38878), (574, 27770), (820, 19439), (1148, 13885), (1435, 11108), (2777, 5740), (2870, 5554)]