20193381

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{151}}^1$

素因数の和:303

約数の個数: 40

約数和(自身を含む): 32958464

約数和(自身を除く): 12765083

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 127, 151, 351, 381, 453, 1053, 1143, 1359, 1651, 1963, 3429, 4077, 4953, 5889, 10287, 12231, 14859, 17667, 19177, 44577, 53001, 57531, 133731, 159003, 172593, 249301, 517779, 747903, 1553337, 2243709, 6731127, 20193381]

約数ペア:

[(1, 20193381), (3, 6731127), (9, 2243709), (13, 1553337), (27, 747903), (39, 517779), (81, 249301), (117, 172593), (127, 159003), (151, 133731), (351, 57531), (381, 53001), (453, 44577), (1053, 19177), (1143, 17667), (1359, 14859), (1651, 12231), (1963, 10287), (3429, 5889), (4077, 4953)]