20689552

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{99469}}^1$

素因数の和:99490

約数の個数: 20

約数和(自身を含む): 43169980

約数和(自身を除く): 22480428

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 99469, 198938, 397876, 795752, 1293097, 1591504, 2586194, 5172388, 10344776, 20689552]

約数ペア:

[(1, 20689552), (2, 10344776), (4, 5172388), (8, 2586194), (13, 1591504), (16, 1293097), (26, 795752), (52, 397876), (104, 198938), (208, 99469)]