19801311

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{2473}}^1$

素因数の和:2650

約数の個数: 16

約数和(自身を含む): 28144224

約数和(自身を除く): 8342913

約数列:

[1, 3, 17, 51, 157, 471, 2473, 2669, 7419, 8007, 42041, 126123, 388261, 1164783, 6600437, 19801311]

約数ペア:

[(1, 19801311), (3, 6600437), (17, 1164783), (51, 388261), (157, 126123), (471, 42041), (2473, 8007), (2669, 7419)]