21695672

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{2381}}^1$

素因数の和:2471

約数の個数: 32

約数和(自身を含む): 43733520

約数和(自身を除く): 22037848

約数列:

[1, 2, 4, 8, 17, 34, 67, 68, 134, 136, 268, 536, 1139, 2278, 2381, 4556, 4762, 9112, 9524, 19048, 40477, 80954, 159527, 161908, 319054, 323816, 638108, 1276216, 2711959, 5423918, 10847836, 21695672]

約数ペア:

[(1, 21695672), (2, 10847836), (4, 5423918), (8, 2711959), (17, 1276216), (34, 638108), (67, 323816), (68, 319054), (134, 161908), (136, 159527), (268, 80954), (536, 40477), (1139, 19048), (2278, 9524), (2381, 9112), (4556, 4762)]