280407309

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{10589}}^1$

素因数の和:10709

約数の個数: 32

約数和(自身を含む): 464943360

約数和(自身を除く): 184536051

約数列:

[1, 3, 7, 13, 21, 39, 91, 97, 273, 291, 679, 1261, 2037, 3783, 8827, 10589, 26481, 31767, 74123, 137657, 222369, 412971, 963599, 1027133, 2890797, 3081399, 7189931, 13352729, 21569793, 40058187, 93469103, 280407309]

約数ペア:

[(1, 280407309), (3, 93469103), (7, 40058187), (13, 21569793), (21, 13352729), (39, 7189931), (91, 3081399), (97, 2890797), (273, 1027133), (291, 963599), (679, 412971), (1261, 222369), (2037, 137657), (3783, 74123), (8827, 31767), (10589, 26481)]