18906992

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{5347}}^1$

素因数の和:5385

約数の個数: 40

約数和(自身を含む): 41778576

約数和(自身を除く): 22871584

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 34, 52, 68, 104, 136, 208, 221, 272, 442, 884, 1768, 3536, 5347, 10694, 21388, 42776, 69511, 85552, 90899, 139022, 181798, 278044, 363596, 556088, 727192, 1112176, 1181687, 1454384, 2363374, 4726748, 9453496, 18906992]

約数ペア:

[(1, 18906992), (2, 9453496), (4, 4726748), (8, 2363374), (13, 1454384), (16, 1181687), (17, 1112176), (26, 727192), (34, 556088), (52, 363596), (68, 278044), (104, 181798), (136, 139022), (208, 90899), (221, 85552), (272, 69511), (442, 42776), (884, 21388), (1768, 10694), (3536, 5347)]