1989780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2551}}^1$

素因数の和:2576

約数の個数: 48

約数和(自身を含む): 6002304

約数和(自身を除く): 4012524

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 2551, 5102, 7653, 10204, 12755, 15306, 25510, 30612, 33163, 38265, 51020, 66326, 76530, 99489, 132652, 153060, 165815, 198978, 331630, 397956, 497445, 663260, 994890, 1989780]

約数ペア:

[(1, 1989780), (2, 994890), (3, 663260), (4, 497445), (5, 397956), (6, 331630), (10, 198978), (12, 165815), (13, 153060), (15, 132652), (20, 99489), (26, 76530), (30, 66326), (39, 51020), (52, 38265), (60, 33163), (65, 30612), (78, 25510), (130, 15306), (156, 12755), (195, 10204), (260, 7653), (390, 5102), (780, 2551)]