15700040

素因数分解:

$2^3\times 5^1\times {\mathrm{389}}^1\times {\mathrm{1009}}^1$

素因数の和:1409

約数の個数: 32

約数和(自身を含む): 35451000

約数和(自身を除く): 19750960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 389, 778, 1009, 1556, 1945, 2018, 3112, 3890, 4036, 5045, 7780, 8072, 10090, 15560, 20180, 40360, 392501, 785002, 1570004, 1962505, 3140008, 3925010, 7850020, 15700040]

約数ペア:

[(1, 15700040), (2, 7850020), (4, 3925010), (5, 3140008), (8, 1962505), (10, 1570004), (20, 785002), (40, 392501), (389, 40360), (778, 20180), (1009, 15560), (1556, 10090), (1945, 8072), (2018, 7780), (3112, 5045), (3890, 4036)]