21879952

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{257}}^1\times {\mathrm{313}}^1$

素因数の和:595

約数の個数: 40

約数和(自身を含む): 45204696

約数和(自身を除く): 23324744

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 257, 272, 313, 514, 626, 1028, 1252, 2056, 2504, 4112, 4369, 5008, 5321, 8738, 10642, 17476, 21284, 34952, 42568, 69904, 80441, 85136, 160882, 321764, 643528, 1287056, 1367497, 2734994, 5469988, 10939976, 21879952]

約数ペア:

[(1, 21879952), (2, 10939976), (4, 5469988), (8, 2734994), (16, 1367497), (17, 1287056), (34, 643528), (68, 321764), (136, 160882), (257, 85136), (272, 80441), (313, 69904), (514, 42568), (626, 34952), (1028, 21284), (1252, 17476), (2056, 10642), (2504, 8738), (4112, 5321), (4369, 5008)]