18980296

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{2083}}^1$

素因数の和:2173

約数の個数: 32

約数和(自身を含む): 38262240

約数和(自身を除く): 19281944

約数列:

[1, 2, 4, 8, 17, 34, 67, 68, 134, 136, 268, 536, 1139, 2083, 2278, 4166, 4556, 8332, 9112, 16664, 35411, 70822, 139561, 141644, 279122, 283288, 558244, 1116488, 2372537, 4745074, 9490148, 18980296]

約数ペア:

[(1, 18980296), (2, 9490148), (4, 4745074), (8, 2372537), (17, 1116488), (34, 558244), (67, 283288), (68, 279122), (134, 141644), (136, 139561), (268, 70822), (536, 35411), (1139, 16664), (2083, 9112), (2278, 8332), (4166, 4556)]