16995321

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{317}}^1$

素因数の和:390

約数の個数: 48

約数和(自身を含む): 30161664

約数和(自身を除く): 13166343

約数列:

[1, 3, 7, 9, 21, 23, 37, 63, 69, 111, 161, 207, 259, 317, 333, 483, 777, 851, 951, 1449, 2219, 2331, 2553, 2853, 5957, 6657, 7291, 7659, 11729, 17871, 19971, 21873, 35187, 51037, 53613, 65619, 82103, 105561, 153111, 246309, 269767, 459333, 738927, 809301, 1888369, 2427903, 5665107, 16995321]

約数ペア:

[(1, 16995321), (3, 5665107), (7, 2427903), (9, 1888369), (21, 809301), (23, 738927), (37, 459333), (63, 269767), (69, 246309), (111, 153111), (161, 105561), (207, 82103), (259, 65619), (317, 53613), (333, 51037), (483, 35187), (777, 21873), (851, 19971), (951, 17871), (1449, 11729), (2219, 7659), (2331, 7291), (2553, 6657), (2853, 5957)]