15657560

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{1987}}^1$

素因数の和:2195

約数の個数: 32

約数和(自身を含む): 35426160

約数和(自身を除く): 19768600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1576, 1970, 1987, 3940, 3974, 7880, 7948, 9935, 15896, 19870, 39740, 79480, 391439, 782878, 1565756, 1957195, 3131512, 3914390, 7828780, 15657560]

約数ペア:

[(1, 15657560), (2, 7828780), (4, 3914390), (5, 3131512), (8, 1957195), (10, 1565756), (20, 782878), (40, 391439), (197, 79480), (394, 39740), (788, 19870), (985, 15896), (1576, 9935), (1970, 7948), (1987, 7880), (3940, 3974)]