21628048

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{103981}}^1$

素因数の和:104002

約数の個数: 20

約数和(自身を含む): 45128188

約数和(自身を除く): 23500140

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 103981, 207962, 415924, 831848, 1351753, 1663696, 2703506, 5407012, 10814024, 21628048]

約数ペア:

[(1, 21628048), (2, 10814024), (4, 5407012), (8, 2703506), (13, 1663696), (16, 1351753), (26, 831848), (52, 415924), (104, 207962), (208, 103981)]