20287358

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1$

素因数の和:201

約数の個数: 64

約数和(自身を含む): 40642560

約数和(自身を除く): 20355202

約数列:

[1, 2, 7, 13, 14, 17, 26, 34, 79, 83, 91, 119, 158, 166, 182, 221, 238, 442, 553, 581, 1027, 1079, 1106, 1162, 1343, 1411, 1547, 2054, 2158, 2686, 2822, 3094, 6557, 7189, 7553, 9401, 9877, 13114, 14378, 15106, 17459, 18343, 18802, 19754, 34918, 36686, 45899, 85241, 91798, 111469, 122213, 128401, 170482, 222938, 244426, 256802, 596687, 780283, 1193374, 1449097, 1560566, 2898194, 10143679, 20287358]

約数ペア:

[(1, 20287358), (2, 10143679), (7, 2898194), (13, 1560566), (14, 1449097), (17, 1193374), (26, 780283), (34, 596687), (79, 256802), (83, 244426), (91, 222938), (119, 170482), (158, 128401), (166, 122213), (182, 111469), (221, 91798), (238, 85241), (442, 45899), (553, 36686), (581, 34918), (1027, 19754), (1079, 18802), (1106, 18343), (1162, 17459), (1343, 15106), (1411, 14378), (1547, 13114), (2054, 9877), (2158, 9401), (2686, 7553), (2822, 7189), (3094, 6557)]