21871945

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{467}}^1$

素因数の和:537

約数の個数: 32

約数和(自身を含む): 30326400

約数和(自身を除く): 8454455

約数列:

[1, 5, 17, 19, 29, 85, 95, 145, 323, 467, 493, 551, 1615, 2335, 2465, 2755, 7939, 8873, 9367, 13543, 39695, 44365, 46835, 67715, 150841, 230231, 257317, 754205, 1151155, 1286585, 4374389, 21871945]

約数ペア:

[(1, 21871945), (5, 4374389), (17, 1286585), (19, 1151155), (29, 754205), (85, 257317), (95, 230231), (145, 150841), (323, 67715), (467, 46835), (493, 44365), (551, 39695), (1615, 13543), (2335, 9367), (2465, 8873), (2755, 7939)]