20718664

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{4397}}^1$

素因数の和:4453

約数の個数: 32

約数和(自身を含む): 42220800

約数和(自身を除く): 21502136

約数列:

[1, 2, 4, 8, 19, 31, 38, 62, 76, 124, 152, 248, 589, 1178, 2356, 4397, 4712, 8794, 17588, 35176, 83543, 136307, 167086, 272614, 334172, 545228, 668344, 1090456, 2589833, 5179666, 10359332, 20718664]

約数ペア:

[(1, 20718664), (2, 10359332), (4, 5179666), (8, 2589833), (19, 1090456), (31, 668344), (38, 545228), (62, 334172), (76, 272614), (124, 167086), (152, 136307), (248, 83543), (589, 35176), (1178, 17588), (2356, 8794), (4397, 4712)]