20720024

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{167}}^1\times {\mathrm{1193}}^1$

素因数の和:1379

約数の個数: 32

約数和(自身を含む): 42124320

約数和(自身を除く): 21404296

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 167, 334, 668, 1193, 1336, 2171, 2386, 4342, 4772, 8684, 9544, 15509, 17368, 31018, 62036, 124072, 199231, 398462, 796924, 1593848, 2590003, 5180006, 10360012, 20720024]

約数ペア:

[(1, 20720024), (2, 10360012), (4, 5180006), (8, 2590003), (13, 1593848), (26, 796924), (52, 398462), (104, 199231), (167, 124072), (334, 62036), (668, 31018), (1193, 17368), (1336, 15509), (2171, 9544), (2386, 8684), (4342, 4772)]