20577128

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17987}}^1$

素因数の和:18017

約数の個数: 32

約数和(自身を含む): 45329760

約数和(自身を除く): 24752632

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 44, 52, 88, 104, 143, 286, 572, 1144, 17987, 35974, 71948, 143896, 197857, 233831, 395714, 467662, 791428, 935324, 1582856, 1870648, 2572141, 5144282, 10288564, 20577128]

約数ペア:

[(1, 20577128), (2, 10288564), (4, 5144282), (8, 2572141), (11, 1870648), (13, 1582856), (22, 935324), (26, 791428), (44, 467662), (52, 395714), (88, 233831), (104, 197857), (143, 143896), (286, 71948), (572, 35974), (1144, 17987)]