20160819

素因数分解:

$3^4\times 7^1\times {\mathrm{31}}^2\times {\mathrm{37}}^1$

素因数の和:118

約数の個数: 60

約数和(自身を含む): 36526512

約数和(自身を除く): 16365693

約数列:

[1, 3, 7, 9, 21, 27, 31, 37, 63, 81, 93, 111, 189, 217, 259, 279, 333, 567, 651, 777, 837, 961, 999, 1147, 1953, 2331, 2511, 2883, 2997, 3441, 5859, 6727, 6993, 8029, 8649, 10323, 17577, 20181, 20979, 24087, 25947, 30969, 35557, 60543, 72261, 77841, 92907, 106671, 181629, 216783, 248899, 320013, 544887, 650349, 746697, 960039, 2240091, 2880117, 6720273, 20160819]

約数ペア:

[(1, 20160819), (3, 6720273), (7, 2880117), (9, 2240091), (21, 960039), (27, 746697), (31, 650349), (37, 544887), (63, 320013), (81, 248899), (93, 216783), (111, 181629), (189, 106671), (217, 92907), (259, 77841), (279, 72261), (333, 60543), (567, 35557), (651, 30969), (777, 25947), (837, 24087), (961, 20979), (999, 20181), (1147, 17577), (1953, 10323), (2331, 8649), (2511, 8029), (2883, 6993), (2997, 6727), (3441, 5859)]