20018193

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1\times {\mathrm{163}}^1$

素因数の和:293

約数の個数: 32

約数和(自身を含む): 29976576

約数和(自身を除く): 9958383

約数列:

[1, 3, 13, 39, 47, 67, 141, 163, 201, 489, 611, 871, 1833, 2119, 2613, 3149, 6357, 7661, 9447, 10921, 22983, 32763, 40937, 99593, 122811, 141973, 298779, 425919, 513287, 1539861, 6672731, 20018193]

約数ペア:

[(1, 20018193), (3, 6672731), (13, 1539861), (39, 513287), (47, 425919), (67, 298779), (141, 141973), (163, 122811), (201, 99593), (489, 40937), (611, 32763), (871, 22983), (1833, 10921), (2119, 9447), (2613, 7661), (3149, 6357)]