638388784

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{457}}^1\times {\mathrm{7937}}^1$

素因数の和:8413

約数の個数: 40

約数和(自身を含む): 1352444688

約数和(自身を除く): 714055904

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 457, 914, 1828, 3656, 5027, 7312, 7937, 10054, 15874, 20108, 31748, 40216, 63496, 80432, 87307, 126992, 174614, 349228, 698456, 1396912, 3627209, 7254418, 14508836, 29017672, 39899299, 58035344, 79798598, 159597196, 319194392, 638388784]

約数ペア:

[(1, 638388784), (2, 319194392), (4, 159597196), (8, 79798598), (11, 58035344), (16, 39899299), (22, 29017672), (44, 14508836), (88, 7254418), (176, 3627209), (457, 1396912), (914, 698456), (1828, 349228), (3656, 174614), (5027, 126992), (7312, 87307), (7937, 80432), (10054, 63496), (15874, 40216), (20108, 31748)]