21488831

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{10267}}^1$

素因数の和:10310

約数の個数: 16

約数和(自身を含む): 27600384

約数和(自身を除く): 6111553

約数列:

[1, 7, 13, 23, 91, 161, 299, 2093, 10267, 71869, 133471, 236141, 934297, 1652987, 3069833, 21488831]

約数ペア:

[(1, 21488831), (7, 3069833), (13, 1652987), (23, 934297), (91, 236141), (161, 133471), (299, 71869), (2093, 10267)]