19378209

素因数分解:

$3^1\times {\mathrm{67}}^1\times {\mathrm{229}}^1\times {\mathrm{421}}^1$

素因数の和:720

約数の個数: 16

約数和(自身を含む): 26400320

約数和(自身を除く): 7022111

約数列:

[1, 3, 67, 201, 229, 421, 687, 1263, 15343, 28207, 46029, 84621, 96409, 289227, 6459403, 19378209]

約数ペア:

[(1, 19378209), (3, 6459403), (67, 289227), (201, 96409), (229, 84621), (421, 46029), (687, 28207), (1263, 15343)]