21290902

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{263}}^1\times {\mathrm{2381}}^1$

素因数の和:2663

約数の個数: 16

約数和(自身を含む): 33957792

約数和(自身を除く): 12666890

約数列:

[1, 2, 17, 34, 263, 526, 2381, 4471, 4762, 8942, 40477, 80954, 626203, 1252406, 10645451, 21290902]

約数ペア:

[(1, 21290902), (2, 10645451), (17, 1252406), (34, 626203), (263, 80954), (526, 40477), (2381, 8942), (4471, 4762)]