20989832

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{8123}}^1$

素因数の和:8165

約数の個数: 32

約数和(自身を含む): 43869600

約数和(自身を除く): 22879768

約数列:

[1, 2, 4, 8, 17, 19, 34, 38, 68, 76, 136, 152, 323, 646, 1292, 2584, 8123, 16246, 32492, 64984, 138091, 154337, 276182, 308674, 552364, 617348, 1104728, 1234696, 2623729, 5247458, 10494916, 20989832]

約数ペア:

[(1, 20989832), (2, 10494916), (4, 5247458), (8, 2623729), (17, 1234696), (19, 1104728), (34, 617348), (38, 552364), (68, 308674), (76, 276182), (136, 154337), (152, 138091), (323, 64984), (646, 32492), (1292, 16246), (2584, 8123)]