19942839

素因数分解:

$3^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{4007}}^1$

素因数の和:4099

約数の個数: 24

約数和(自身を含む): 33346560

約数和(自身を除く): 13403721

約数列:

[1, 3, 7, 9, 21, 63, 79, 237, 553, 711, 1659, 4007, 4977, 12021, 28049, 36063, 84147, 252441, 316553, 949659, 2215871, 2848977, 6647613, 19942839]

約数ペア:

[(1, 19942839), (3, 6647613), (7, 2848977), (9, 2215871), (21, 949659), (63, 316553), (79, 252441), (237, 84147), (553, 36063), (711, 28049), (1659, 12021), (4007, 4977)]