19972986

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^3\times {\mathrm{41}}^1\times {\mathrm{61}}^1$

素因数の和:140

約数の個数: 64

約数和(自身を含む): 45747072

約数和(自身を除く): 25774086

約数列:

[1, 2, 3, 6, 11, 22, 33, 41, 61, 66, 82, 121, 122, 123, 183, 242, 246, 363, 366, 451, 671, 726, 902, 1331, 1342, 1353, 2013, 2501, 2662, 2706, 3993, 4026, 4961, 5002, 7381, 7503, 7986, 9922, 14762, 14883, 15006, 22143, 27511, 29766, 44286, 54571, 55022, 81191, 82533, 109142, 162382, 163713, 165066, 243573, 302621, 327426, 487146, 605242, 907863, 1815726, 3328831, 6657662, 9986493, 19972986]

約数ペア:

[(1, 19972986), (2, 9986493), (3, 6657662), (6, 3328831), (11, 1815726), (22, 907863), (33, 605242), (41, 487146), (61, 327426), (66, 302621), (82, 243573), (121, 165066), (122, 163713), (123, 162382), (183, 109142), (242, 82533), (246, 81191), (363, 55022), (366, 54571), (451, 44286), (671, 29766), (726, 27511), (902, 22143), (1331, 15006), (1342, 14883), (1353, 14762), (2013, 9922), (2501, 7986), (2662, 7503), (2706, 7381), (3993, 5002), (4026, 4961)]