20470664

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{197}}^1\times {\mathrm{419}}^1$

素因数の和:653

約数の個数: 32

約数和(自身を含む): 39916800

約数和(自身を除く): 19446136

約数列:

[1, 2, 4, 8, 31, 62, 124, 197, 248, 394, 419, 788, 838, 1576, 1676, 3352, 6107, 12214, 12989, 24428, 25978, 48856, 51956, 82543, 103912, 165086, 330172, 660344, 2558833, 5117666, 10235332, 20470664]

約数ペア:

[(1, 20470664), (2, 10235332), (4, 5117666), (8, 2558833), (31, 660344), (62, 330172), (124, 165086), (197, 103912), (248, 82543), (394, 51956), (419, 48856), (788, 25978), (838, 24428), (1576, 12989), (1676, 12214), (3352, 6107)]