21310928

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{1667}}^1$

素因数の和:1739

約数の個数: 40

約数和(自身を含む): 44675712

約数和(自身を除く): 23364784

約数列:

[1, 2, 4, 8, 16, 17, 34, 47, 68, 94, 136, 188, 272, 376, 752, 799, 1598, 1667, 3196, 3334, 6392, 6668, 12784, 13336, 26672, 28339, 56678, 78349, 113356, 156698, 226712, 313396, 453424, 626792, 1253584, 1331933, 2663866, 5327732, 10655464, 21310928]

約数ペア:

[(1, 21310928), (2, 10655464), (4, 5327732), (8, 2663866), (16, 1331933), (17, 1253584), (34, 626792), (47, 453424), (68, 313396), (94, 226712), (136, 156698), (188, 113356), (272, 78349), (376, 56678), (752, 28339), (799, 26672), (1598, 13336), (1667, 12784), (3196, 6668), (3334, 6392)]