21289870

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{9811}}^1$

素因数の和:9856

約数の個数: 32

約数和(自身を含む): 45213696

約数和(自身を除く): 23923826

約数列:

[1, 2, 5, 7, 10, 14, 31, 35, 62, 70, 155, 217, 310, 434, 1085, 2170, 9811, 19622, 49055, 68677, 98110, 137354, 304141, 343385, 608282, 686770, 1520705, 2128987, 3041410, 4257974, 10644935, 21289870]

約数ペア:

[(1, 21289870), (2, 10644935), (5, 4257974), (7, 3041410), (10, 2128987), (14, 1520705), (31, 686770), (35, 608282), (62, 343385), (70, 304141), (155, 137354), (217, 98110), (310, 68677), (434, 49055), (1085, 19622), (2170, 9811)]