19970960

素因数分解:

$2^4\times 5^1\times {\mathrm{191}}^1\times {\mathrm{1307}}^1$

素因数の和:1511

約数の個数: 40

約数和(自身を含む): 46711296

約数和(自身を除く): 26740336

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 191, 382, 764, 955, 1307, 1528, 1910, 2614, 3056, 3820, 5228, 6535, 7640, 10456, 13070, 15280, 20912, 26140, 52280, 104560, 249637, 499274, 998548, 1248185, 1997096, 2496370, 3994192, 4992740, 9985480, 19970960]

約数ペア:

[(1, 19970960), (2, 9985480), (4, 4992740), (5, 3994192), (8, 2496370), (10, 1997096), (16, 1248185), (20, 998548), (40, 499274), (80, 249637), (191, 104560), (382, 52280), (764, 26140), (955, 20912), (1307, 15280), (1528, 13070), (1910, 10456), (2614, 7640), (3056, 6535), (3820, 5228)]