19724229

素因数分解:

$3^4\times 7^1\times {\mathrm{43}}^1\times {\mathrm{809}}^1$

素因数の和:871

約数の個数: 40

約数和(自身を含む): 34499520

約数和(自身を除く): 14775291

約数列:

[1, 3, 7, 9, 21, 27, 43, 63, 81, 129, 189, 301, 387, 567, 809, 903, 1161, 2427, 2709, 3483, 5663, 7281, 8127, 16989, 21843, 24381, 34787, 50967, 65529, 104361, 152901, 243509, 313083, 458703, 730527, 939249, 2191581, 2817747, 6574743, 19724229]

約数ペア:

[(1, 19724229), (3, 6574743), (7, 2817747), (9, 2191581), (21, 939249), (27, 730527), (43, 458703), (63, 313083), (81, 243509), (129, 152901), (189, 104361), (301, 65529), (387, 50967), (567, 34787), (809, 24381), (903, 21843), (1161, 16989), (2427, 8127), (2709, 7281), (3483, 5663)]