21325605

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{2447}}^1$

素因数の和:2545

約数の個数: 32

約数和(自身を含む): 39481344

約数和(自身を除く): 18155739

約数列:

[1, 3, 5, 7, 15, 21, 35, 83, 105, 249, 415, 581, 1245, 1743, 2447, 2905, 7341, 8715, 12235, 17129, 36705, 51387, 85645, 203101, 256935, 609303, 1015505, 1421707, 3046515, 4265121, 7108535, 21325605]

約数ペア:

[(1, 21325605), (3, 7108535), (5, 4265121), (7, 3046515), (15, 1421707), (21, 1015505), (35, 609303), (83, 256935), (105, 203101), (249, 85645), (415, 51387), (581, 36705), (1245, 17129), (1743, 12235), (2447, 8715), (2905, 7341)]