21005744

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{2663}}^1$

素因数の和:2717

約数の個数: 40

約数和(自身を含む): 44595360

約数和(自身を除く): 23589616

約数列:

[1, 2, 4, 8, 16, 17, 29, 34, 58, 68, 116, 136, 232, 272, 464, 493, 986, 1972, 2663, 3944, 5326, 7888, 10652, 21304, 42608, 45271, 77227, 90542, 154454, 181084, 308908, 362168, 617816, 724336, 1235632, 1312859, 2625718, 5251436, 10502872, 21005744]

約数ペア:

[(1, 21005744), (2, 10502872), (4, 5251436), (8, 2625718), (16, 1312859), (17, 1235632), (29, 724336), (34, 617816), (58, 362168), (68, 308908), (116, 181084), (136, 154454), (232, 90542), (272, 77227), (464, 45271), (493, 42608), (986, 21304), (1972, 10652), (2663, 7888), (3944, 5326)]