20891696

素因数分解:

$2^4\times 7^1\times {\mathrm{103}}^1\times {\mathrm{1811}}^1$

素因数の和:1929

約数の個数: 40

約数和(自身を含む): 46735104

約数和(自身を除く): 25843408

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 103, 112, 206, 412, 721, 824, 1442, 1648, 1811, 2884, 3622, 5768, 7244, 11536, 12677, 14488, 25354, 28976, 50708, 101416, 186533, 202832, 373066, 746132, 1305731, 1492264, 2611462, 2984528, 5222924, 10445848, 20891696]

約数ペア:

[(1, 20891696), (2, 10445848), (4, 5222924), (7, 2984528), (8, 2611462), (14, 1492264), (16, 1305731), (28, 746132), (56, 373066), (103, 202832), (112, 186533), (206, 101416), (412, 50708), (721, 28976), (824, 25354), (1442, 14488), (1648, 12677), (1811, 11536), (2884, 7244), (3622, 5768)]