19720402

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{569}}^1$

素因数の和:658

約数の個数: 32

約数和(自身を含む): 33707520

約数和(自身を除く): 13987118

約数列:

[1, 2, 13, 26, 31, 43, 62, 86, 403, 559, 569, 806, 1118, 1138, 1333, 2666, 7397, 14794, 17329, 17639, 24467, 34658, 35278, 48934, 229307, 318071, 458614, 636142, 758477, 1516954, 9860201, 19720402]

約数ペア:

[(1, 19720402), (2, 9860201), (13, 1516954), (26, 758477), (31, 636142), (43, 458614), (62, 318071), (86, 229307), (403, 48934), (559, 35278), (569, 34658), (806, 24467), (1118, 17639), (1138, 17329), (1333, 14794), (2666, 7397)]