19720558

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{1301}}^1$

素因数の和:1380

約数の個数: 32

約数和(自身を含む): 35435232

約数和(自身を除く): 15714674

約数列:

[1, 2, 11, 13, 22, 26, 53, 106, 143, 286, 583, 689, 1166, 1301, 1378, 2602, 7579, 14311, 15158, 16913, 28622, 33826, 68953, 137906, 186043, 372086, 758483, 896389, 1516966, 1792778, 9860279, 19720558]

約数ペア:

[(1, 19720558), (2, 9860279), (11, 1792778), (13, 1516966), (22, 896389), (26, 758483), (53, 372086), (106, 186043), (143, 137906), (286, 68953), (583, 33826), (689, 28622), (1166, 16913), (1301, 15158), (1378, 14311), (2602, 7579)]