18695468

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{19}}^2\times {\mathrm{107}}^1$

素因数の和:171

約数の個数: 54

約数和(自身を含む): 38308788

約数和(自身を除く): 19613320

約数列:

[1, 2, 4, 11, 19, 22, 38, 44, 76, 107, 121, 209, 214, 242, 361, 418, 428, 484, 722, 836, 1177, 1444, 2033, 2299, 2354, 3971, 4066, 4598, 4708, 7942, 8132, 9196, 12947, 15884, 22363, 25894, 38627, 43681, 44726, 51788, 77254, 87362, 89452, 154508, 174724, 245993, 424897, 491986, 849794, 983972, 1699588, 4673867, 9347734, 18695468]

約数ペア:

[(1, 18695468), (2, 9347734), (4, 4673867), (11, 1699588), (19, 983972), (22, 849794), (38, 491986), (44, 424897), (76, 245993), (107, 174724), (121, 154508), (209, 89452), (214, 87362), (242, 77254), (361, 51788), (418, 44726), (428, 43681), (484, 38627), (722, 25894), (836, 22363), (1177, 15884), (1444, 12947), (2033, 9196), (2299, 8132), (2354, 7942), (3971, 4708), (4066, 4598)]