16720494

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{911}}^1$

素因数の和:965

約数の個数: 64

約数和(自身を含む): 42024960

約数和(自身を除く): 25304466

約数列:

[1, 2, 3, 6, 7, 14, 19, 21, 23, 38, 42, 46, 57, 69, 114, 133, 138, 161, 266, 322, 399, 437, 483, 798, 874, 911, 966, 1311, 1822, 2622, 2733, 3059, 5466, 6118, 6377, 9177, 12754, 17309, 18354, 19131, 20953, 34618, 38262, 41906, 51927, 62859, 103854, 121163, 125718, 146671, 242326, 293342, 363489, 398107, 440013, 726978, 796214, 880026, 1194321, 2388642, 2786749, 5573498, 8360247, 16720494]

約数ペア:

[(1, 16720494), (2, 8360247), (3, 5573498), (6, 2786749), (7, 2388642), (14, 1194321), (19, 880026), (21, 796214), (23, 726978), (38, 440013), (42, 398107), (46, 363489), (57, 293342), (69, 242326), (114, 146671), (133, 125718), (138, 121163), (161, 103854), (266, 62859), (322, 51927), (399, 41906), (437, 38262), (483, 34618), (798, 20953), (874, 19131), (911, 18354), (966, 17309), (1311, 12754), (1822, 9177), (2622, 6377), (2733, 6118), (3059, 5466)]