20748704

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{887}}^1$

素因数の和:957

約数の個数: 48

約数和(自身を含む): 44307648

約数和(自身を除く): 23558944

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 43, 68, 86, 136, 172, 272, 344, 544, 688, 731, 887, 1376, 1462, 1774, 2924, 3548, 5848, 7096, 11696, 14192, 15079, 23392, 28384, 30158, 38141, 60316, 76282, 120632, 152564, 241264, 305128, 482528, 610256, 648397, 1220512, 1296794, 2593588, 5187176, 10374352, 20748704]

約数ペア:

[(1, 20748704), (2, 10374352), (4, 5187176), (8, 2593588), (16, 1296794), (17, 1220512), (32, 648397), (34, 610256), (43, 482528), (68, 305128), (86, 241264), (136, 152564), (172, 120632), (272, 76282), (344, 60316), (544, 38141), (688, 30158), (731, 28384), (887, 23392), (1376, 15079), (1462, 14192), (1774, 11696), (2924, 7096), (3548, 5848)]