1287580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{541}}^1$

素因数の和:574

約数の個数: 48

約数和(自身を含む): 3278016

約数和(自身を除く): 1990436

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 68, 70, 85, 119, 140, 170, 238, 340, 476, 541, 595, 1082, 1190, 2164, 2380, 2705, 3787, 5410, 7574, 9197, 10820, 15148, 18394, 18935, 36788, 37870, 45985, 64379, 75740, 91970, 128758, 183940, 257516, 321895, 643790, 1287580]

約数ペア:

[(1, 1287580), (2, 643790), (4, 321895), (5, 257516), (7, 183940), (10, 128758), (14, 91970), (17, 75740), (20, 64379), (28, 45985), (34, 37870), (35, 36788), (68, 18935), (70, 18394), (85, 15148), (119, 10820), (140, 9197), (170, 7574), (238, 5410), (340, 3787), (476, 2705), (541, 2380), (595, 2164), (1082, 1190)]