19729724

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{181}}^1\times {\mathrm{229}}^1$

素因数の和:438

約数の個数: 48

約数和(自身を含む): 42194880

約数和(自身を除く): 22465156

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 68, 119, 181, 229, 238, 362, 458, 476, 724, 916, 1267, 1603, 2534, 3077, 3206, 3893, 5068, 6154, 6412, 7786, 12308, 15572, 21539, 27251, 41449, 43078, 54502, 82898, 86156, 109004, 165796, 290143, 580286, 704633, 1160572, 1409266, 2818532, 4932431, 9864862, 19729724]

約数ペア:

[(1, 19729724), (2, 9864862), (4, 4932431), (7, 2818532), (14, 1409266), (17, 1160572), (28, 704633), (34, 580286), (68, 290143), (119, 165796), (181, 109004), (229, 86156), (238, 82898), (362, 54502), (458, 43078), (476, 41449), (724, 27251), (916, 21539), (1267, 15572), (1603, 12308), (2534, 7786), (3077, 6412), (3206, 6154), (3893, 5068)]