81995340

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{991}}^1$

素因数の和:1207

約数の個数: 96

約数和(自身を含む): 263983104

約数和(自身を除く): 181987764

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 197, 210, 394, 420, 591, 788, 985, 991, 1182, 1379, 1970, 1982, 2364, 2758, 2955, 2973, 3940, 3964, 4137, 4955, 5516, 5910, 5946, 6895, 6937, 8274, 9910, 11820, 11892, 13790, 13874, 14865, 16548, 19820, 20685, 20811, 27580, 27748, 29730, 34685, 41370, 41622, 59460, 69370, 82740, 83244, 104055, 138740, 195227, 208110, 390454, 416220, 585681, 780908, 976135, 1171362, 1366589, 1952270, 2342724, 2733178, 2928405, 3904540, 4099767, 5466356, 5856810, 6832945, 8199534, 11713620, 13665890, 16399068, 20498835, 27331780, 40997670, 81995340]

約数ペア:

[(1, 81995340), (2, 40997670), (3, 27331780), (4, 20498835), (5, 16399068), (6, 13665890), (7, 11713620), (10, 8199534), (12, 6832945), (14, 5856810), (15, 5466356), (20, 4099767), (21, 3904540), (28, 2928405), (30, 2733178), (35, 2342724), (42, 1952270), (60, 1366589), (70, 1171362), (84, 976135), (105, 780908), (140, 585681), (197, 416220), (210, 390454), (394, 208110), (420, 195227), (591, 138740), (788, 104055), (985, 83244), (991, 82740), (1182, 69370), (1379, 59460), (1970, 41622), (1982, 41370), (2364, 34685), (2758, 29730), (2955, 27748), (2973, 27580), (3940, 20811), (3964, 20685), (4137, 19820), (4955, 16548), (5516, 14865), (5910, 13874), (5946, 13790), (6895, 11892), (6937, 11820), (8274, 9910)]