20666220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{20261}}^1$

素因数の和:20290

約数の個数: 48

約数和(自身を含む): 61272288

約数和(自身を除く): 40606068

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, 1020, 20261, 40522, 60783, 81044, 101305, 121566, 202610, 243132, 303915, 344437, 405220, 607830, 688874, 1033311, 1215660, 1377748, 1722185, 2066622, 3444370, 4133244, 5166555, 6888740, 10333110, 20666220]

約数ペア:

[(1, 20666220), (2, 10333110), (3, 6888740), (4, 5166555), (5, 4133244), (6, 3444370), (10, 2066622), (12, 1722185), (15, 1377748), (17, 1215660), (20, 1033311), (30, 688874), (34, 607830), (51, 405220), (60, 344437), (68, 303915), (85, 243132), (102, 202610), (170, 121566), (204, 101305), (255, 81044), (340, 60783), (510, 40522), (1020, 20261)]