81491921

素因数分解:

$7^1\times {\mathrm{23}}^2\times {\mathrm{59}}^1\times {\mathrm{373}}^1$

素因数の和:485

約数の個数: 24

約数和(自身を含む): 99274560

約数和(自身を除く): 17782639

約数列:

[1, 7, 23, 59, 161, 373, 413, 529, 1357, 2611, 3703, 8579, 9499, 22007, 31211, 60053, 154049, 197317, 218477, 506161, 1381219, 3543127, 11641703, 81491921]

約数ペア:

[(1, 81491921), (7, 11641703), (23, 3543127), (59, 1381219), (161, 506161), (373, 218477), (413, 197317), (529, 154049), (1357, 60053), (2611, 31211), (3703, 22007), (8579, 9499)]