19809970

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{2543}}^1$

素因数の和:2610

約数の個数: 32

約数和(自身を含む): 38465280

約数和(自身を除く): 18655310

約数列:

[1, 2, 5, 10, 19, 38, 41, 82, 95, 190, 205, 410, 779, 1558, 2543, 3895, 5086, 7790, 12715, 25430, 48317, 96634, 104263, 208526, 241585, 483170, 521315, 1042630, 1980997, 3961994, 9904985, 19809970]

約数ペア:

[(1, 19809970), (2, 9904985), (5, 3961994), (10, 1980997), (19, 1042630), (38, 521315), (41, 483170), (82, 241585), (95, 208526), (190, 104263), (205, 96634), (410, 48317), (779, 25430), (1558, 12715), (2543, 7790), (3895, 5086)]