81901183

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{359}}^1$

素因数の和:511

約数の個数: 32

約数和(自身を含む): 106444800

約数和(自身を除く): 24543617

約数列:

[1, 7, 13, 23, 91, 109, 161, 299, 359, 763, 1417, 2093, 2507, 2513, 4667, 8257, 9919, 17549, 32591, 32669, 39131, 57799, 107341, 228137, 273917, 508703, 751387, 900013, 3560921, 6300091, 11700169, 81901183]

約数ペア:

[(1, 81901183), (7, 11700169), (13, 6300091), (23, 3560921), (91, 900013), (109, 751387), (161, 508703), (299, 273917), (359, 228137), (763, 107341), (1417, 57799), (2093, 39131), (2507, 32669), (2513, 32591), (4667, 17549), (8257, 9919)]