19617640

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{10009}}^1$

素因数の和:10034

約数の個数: 48

約数和(自身を含む): 51351300

約数和(自身を除く): 31733660

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 10009, 20018, 40036, 50045, 70063, 80072, 100090, 140126, 200180, 280252, 350315, 400360, 490441, 560504, 700630, 980882, 1401260, 1961764, 2452205, 2802520, 3923528, 4904410, 9808820, 19617640]

約数ペア:

[(1, 19617640), (2, 9808820), (4, 4904410), (5, 3923528), (7, 2802520), (8, 2452205), (10, 1961764), (14, 1401260), (20, 980882), (28, 700630), (35, 560504), (40, 490441), (49, 400360), (56, 350315), (70, 280252), (98, 200180), (140, 140126), (196, 100090), (245, 80072), (280, 70063), (392, 50045), (490, 40036), (980, 20018), (1960, 10009)]