21277191

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{17599}}^1$

素因数の和:17646

約数の個数: 16

約数和(自身を含む): 31539200

約数和(自身を除く): 10262009

約数列:

[1, 3, 13, 31, 39, 93, 403, 1209, 17599, 52797, 228787, 545569, 686361, 1636707, 7092397, 21277191]

約数ペア:

[(1, 21277191), (3, 7092397), (13, 1636707), (31, 686361), (39, 545569), (93, 228787), (403, 52797), (1209, 17599)]