78599780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{509}}^1\times {\mathrm{1103}}^1$

素因数の和:1628

約数の個数: 48

約数和(自身を含む): 189181440

約数和(自身を除く): 110581660

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 509, 1018, 1103, 2036, 2206, 2545, 3563, 4412, 5090, 5515, 7126, 7721, 10180, 11030, 14252, 15442, 17815, 22060, 30884, 35630, 38605, 71260, 77210, 154420, 561427, 1122854, 2245708, 2807135, 3929989, 5614270, 7859978, 11228540, 15719956, 19649945, 39299890, 78599780]

約数ペア:

[(1, 78599780), (2, 39299890), (4, 19649945), (5, 15719956), (7, 11228540), (10, 7859978), (14, 5614270), (20, 3929989), (28, 2807135), (35, 2245708), (70, 1122854), (140, 561427), (509, 154420), (1018, 77210), (1103, 71260), (2036, 38605), (2206, 35630), (2545, 30884), (3563, 22060), (4412, 17815), (5090, 15442), (5515, 14252), (7126, 11030), (7721, 10180)]