21262376

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{1979}}^1$

素因数の和:2081

約数の個数: 32

約数和(自身を含む): 42768000

約数和(自身を除く): 21505624

約数列:

[1, 2, 4, 8, 17, 34, 68, 79, 136, 158, 316, 632, 1343, 1979, 2686, 3958, 5372, 7916, 10744, 15832, 33643, 67286, 134572, 156341, 269144, 312682, 625364, 1250728, 2657797, 5315594, 10631188, 21262376]

約数ペア:

[(1, 21262376), (2, 10631188), (4, 5315594), (8, 2657797), (17, 1250728), (34, 625364), (68, 312682), (79, 269144), (136, 156341), (158, 134572), (316, 67286), (632, 33643), (1343, 15832), (1979, 10744), (2686, 7916), (3958, 5372)]