18418928

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{229}}^1\times {\mathrm{457}}^1$

素因数の和:705

約数の個数: 40

約数和(自身を含む): 39186480

約数和(自身を除く): 20767552

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 229, 457, 458, 914, 916, 1828, 1832, 2519, 3656, 3664, 5027, 5038, 7312, 10054, 10076, 20108, 20152, 40216, 40304, 80432, 104653, 209306, 418612, 837224, 1151183, 1674448, 2302366, 4604732, 9209464, 18418928]

約数ペア:

[(1, 18418928), (2, 9209464), (4, 4604732), (8, 2302366), (11, 1674448), (16, 1151183), (22, 837224), (44, 418612), (88, 209306), (176, 104653), (229, 80432), (457, 40304), (458, 40216), (914, 20152), (916, 20108), (1828, 10076), (1832, 10054), (2519, 7312), (3656, 5038), (3664, 5027)]