21711248

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{104381}}^1$

素因数の和:104402

約数の個数: 20

約数和(自身を含む): 45301788

約数和(自身を除く): 23590540

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 104381, 208762, 417524, 835048, 1356953, 1670096, 2713906, 5427812, 10855624, 21711248]

約数ペア:

[(1, 21711248), (2, 10855624), (4, 5427812), (8, 2713906), (13, 1670096), (16, 1356953), (26, 835048), (52, 417524), (104, 208762), (208, 104381)]