21076993

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1$

素因数の和:205

約数の個数: 32

約数和(自身を含む): 26836992

約数和(自身を除く): 5759999

約数列:

[1, 7, 23, 31, 41, 103, 161, 217, 287, 713, 721, 943, 1271, 2369, 3193, 4223, 4991, 6601, 8897, 16583, 22351, 29233, 29561, 73439, 97129, 130913, 204631, 514073, 679903, 916391, 3010999, 21076993]

約数ペア:

[(1, 21076993), (7, 3010999), (23, 916391), (31, 679903), (41, 514073), (103, 204631), (161, 130913), (217, 97129), (287, 73439), (713, 29561), (721, 29233), (943, 22351), (1271, 16583), (2369, 8897), (3193, 6601), (4223, 4991)]