21194068

素因数分解:

$2^2\times 7^2\times {\mathrm{71}}^1\times {\mathrm{1523}}^1$

素因数の和:1612

約数の個数: 36

約数和(自身を含む): 43781472

約数和(自身を除く): 22587404

約数列:

[1, 2, 4, 7, 14, 28, 49, 71, 98, 142, 196, 284, 497, 994, 1523, 1988, 3046, 3479, 6092, 6958, 10661, 13916, 21322, 42644, 74627, 108133, 149254, 216266, 298508, 432532, 756931, 1513862, 3027724, 5298517, 10597034, 21194068]

約数ペア:

[(1, 21194068), (2, 10597034), (4, 5298517), (7, 3027724), (14, 1513862), (28, 756931), (49, 432532), (71, 298508), (98, 216266), (142, 149254), (196, 108133), (284, 74627), (497, 42644), (994, 21322), (1523, 13916), (1988, 10661), (3046, 6958), (3479, 6092)]