31991128

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{2213}}^1$

素因数の和:2371

約数の個数: 32

約数和(自身を含む): 65091600

約数和(自身を除く): 33100472

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 139, 278, 556, 1112, 1807, 2213, 3614, 4426, 7228, 8852, 14456, 17704, 28769, 57538, 115076, 230152, 307607, 615214, 1230428, 2460856, 3998891, 7997782, 15995564, 31991128]

約数ペア:

[(1, 31991128), (2, 15995564), (4, 7997782), (8, 3998891), (13, 2460856), (26, 1230428), (52, 615214), (104, 307607), (139, 230152), (278, 115076), (556, 57538), (1112, 28769), (1807, 17704), (2213, 14456), (3614, 8852), (4426, 7228)]