20856992

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{277}}^1$

素因数の和:481

約数の個数: 48

約数和(自身を含む): 44625672

約数和(自身を除く): 23768680

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 181, 208, 277, 362, 416, 554, 724, 1108, 1448, 2216, 2353, 2896, 3601, 4432, 4706, 5792, 7202, 8864, 9412, 14404, 18824, 28808, 37648, 50137, 57616, 75296, 100274, 115232, 200548, 401096, 651781, 802192, 1303562, 1604384, 2607124, 5214248, 10428496, 20856992]

約数ペア:

[(1, 20856992), (2, 10428496), (4, 5214248), (8, 2607124), (13, 1604384), (16, 1303562), (26, 802192), (32, 651781), (52, 401096), (104, 200548), (181, 115232), (208, 100274), (277, 75296), (362, 57616), (416, 50137), (554, 37648), (724, 28808), (1108, 18824), (1448, 14404), (2216, 9412), (2353, 8864), (2896, 7202), (3601, 5792), (4432, 4706)]