21569804

素因数分解:

$2^2\times {\mathrm{17}}^2\times {\mathrm{47}}^1\times {\mathrm{397}}^1$

素因数の和:482

約数の個数: 36

約数和(自身を含む): 41054496

約数和(自身を除く): 19484692

約数列:

[1, 2, 4, 17, 34, 47, 68, 94, 188, 289, 397, 578, 794, 799, 1156, 1588, 1598, 3196, 6749, 13498, 13583, 18659, 26996, 27166, 37318, 54332, 74636, 114733, 229466, 317203, 458932, 634406, 1268812, 5392451, 10784902, 21569804]

約数ペア:

[(1, 21569804), (2, 10784902), (4, 5392451), (17, 1268812), (34, 634406), (47, 458932), (68, 317203), (94, 229466), (188, 114733), (289, 74636), (397, 54332), (578, 37318), (794, 27166), (799, 26996), (1156, 18659), (1588, 13583), (1598, 13498), (3196, 6749)]