19977671

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{2141}}^1$

素因数の和:2222

約数の個数: 16

約数和(自身を含む): 24127488

約数和(自身を除く): 4149817

約数列:

[1, 7, 31, 43, 217, 301, 1333, 2141, 9331, 14987, 66371, 92063, 464597, 644441, 2853953, 19977671]

約数ペア:

[(1, 19977671), (7, 2853953), (31, 644441), (43, 464597), (217, 92063), (301, 66371), (1333, 14987), (2141, 9331)]