18706064

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{647}}^1$

素因数の和:807

約数の個数: 40

約数和(自身を含む): 39372480

約数和(自身を除く): 20666416

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 139, 208, 278, 556, 647, 1112, 1294, 1807, 2224, 2588, 3614, 5176, 7228, 8411, 10352, 14456, 16822, 28912, 33644, 67288, 89933, 134576, 179866, 359732, 719464, 1169129, 1438928, 2338258, 4676516, 9353032, 18706064]

約数ペア:

[(1, 18706064), (2, 9353032), (4, 4676516), (8, 2338258), (13, 1438928), (16, 1169129), (26, 719464), (52, 359732), (104, 179866), (139, 134576), (208, 89933), (278, 67288), (556, 33644), (647, 28912), (1112, 16822), (1294, 14456), (1807, 10352), (2224, 8411), (2588, 7228), (3614, 5176)]