19864755

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1129}}^1$

素因数の和:1180

約数の個数: 48

約数和(自身を含む): 38076480

約数和(自身を除く): 18211725

約数列:

[1, 3, 5, 9, 15, 17, 23, 45, 51, 69, 85, 115, 153, 207, 255, 345, 391, 765, 1035, 1129, 1173, 1955, 3387, 3519, 5645, 5865, 10161, 16935, 17595, 19193, 25967, 50805, 57579, 77901, 95965, 129835, 172737, 233703, 287895, 389505, 441439, 863685, 1168515, 1324317, 2207195, 3972951, 6621585, 19864755]

約数ペア:

[(1, 19864755), (3, 6621585), (5, 3972951), (9, 2207195), (15, 1324317), (17, 1168515), (23, 863685), (45, 441439), (51, 389505), (69, 287895), (85, 233703), (115, 172737), (153, 129835), (207, 95965), (255, 77901), (345, 57579), (391, 50805), (765, 25967), (1035, 19193), (1129, 17595), (1173, 16935), (1955, 10161), (3387, 5865), (3519, 5645)]