1581181

素因数分解:

$7^2\times {\mathrm{23}}^2\times {\mathrm{61}}^1$

素因数の和:121

約数の個数: 18

約数和(自身を含む): 1954302

約数和(自身を除く): 373121

約数列:

[1, 7, 23, 49, 61, 161, 427, 529, 1127, 1403, 2989, 3703, 9821, 25921, 32269, 68747, 225883, 1581181]

約数ペア:

[(1, 1581181), (7, 225883), (23, 68747), (49, 32269), (61, 25921), (161, 9821), (427, 3703), (529, 2989), (1127, 1403)]