17921071

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{1409}}^1$

素因数の和:1518

約数の個数: 16

約数和(自身を含む): 21657600

約数和(自身を除く): 3736529

約数列:

[1, 7, 23, 79, 161, 553, 1409, 1817, 9863, 12719, 32407, 111311, 226849, 779177, 2560153, 17921071]

約数ペア:

[(1, 17921071), (7, 2560153), (23, 779177), (79, 226849), (161, 111311), (553, 32407), (1409, 12719), (1817, 9863)]