19986564

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{128119}}^1$

素因数の和:128139

約数の個数: 24

約数和(自身を含む): 50223040

約数和(自身を除く): 30236476

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 128119, 256238, 384357, 512476, 768714, 1537428, 1665547, 3331094, 4996641, 6662188, 9993282, 19986564]

約数ペア:

[(1, 19986564), (2, 9993282), (3, 6662188), (4, 4996641), (6, 3331094), (12, 1665547), (13, 1537428), (26, 768714), (39, 512476), (52, 384357), (78, 256238), (156, 128119)]