20991677945

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{45289}}^1$

素因数の和:45378

約数の個数: 64

約数和(自身を含む): 32869670400

約数和(自身を除く): 11877992455

約数列:

[1, 5, 7, 17, 19, 35, 41, 85, 95, 119, 133, 205, 287, 323, 595, 665, 697, 779, 1435, 1615, 2261, 3485, 3895, 4879, 5453, 11305, 13243, 24395, 27265, 45289, 66215, 92701, 226445, 317023, 463505, 769913, 860491, 1585115, 1856849, 3849565, 4302455, 5389391, 6023437, 9284245, 12997943, 14628347, 26946955, 30117185, 31566433, 35280131, 64989715, 73141735, 102398429, 157832165, 176400655, 220965031, 246960917, 511992145, 599762227, 1104825155, 1234804585, 2998811135, 4198335589, 20991677945]

約数ペア:

[(1, 20991677945), (5, 4198335589), (7, 2998811135), (17, 1234804585), (19, 1104825155), (35, 599762227), (41, 511992145), (85, 246960917), (95, 220965031), (119, 176400655), (133, 157832165), (205, 102398429), (287, 73141735), (323, 64989715), (595, 35280131), (665, 31566433), (697, 30117185), (779, 26946955), (1435, 14628347), (1615, 12997943), (2261, 9284245), (3485, 6023437), (3895, 5389391), (4879, 4302455), (5453, 3849565), (11305, 1856849), (13243, 1585115), (24395, 860491), (27265, 769913), (45289, 463505), (66215, 317023), (92701, 226445)]