245986020

素因数分解:

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

素因数の和:1210

約数の個数: 144

約数和(自身を含む): 857945088

約数和(自身を除く): 611959068

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 197, 210, 252, 315, 394, 420, 591, 630, 788, 985, 991, 1182, 1260, 1379, 1773, 1970, 1982, 2364, 2758, 2955, 2973, 3546, 3940, 3964, 4137, 4955, 5516, 5910, 5946, 6895, 6937, 7092, 8274, 8865, 8919, 9910, 11820, 11892, 12411, 13790, 13874, 14865, 16548, 17730, 17838, 19820, 20685, 20811, 24822, 27580, 27748, 29730, 34685, 35460, 35676, 41370, 41622, 44595, 49644, 59460, 62055, 62433, 69370, 82740, 83244, 89190, 104055, 124110, 124866, 138740, 178380, 195227, 208110, 248220, 249732, 312165, 390454, 416220, 585681, 624330, 780908, 976135, 1171362, 1248660, 1366589, 1757043, 1952270, 2342724, 2733178, 2928405, 3514086, 3904540, 4099767, 5466356, 5856810, 6832945, 7028172, 8199534, 8785215, 11713620, 12299301, 13665890, 16399068, 17570430, 20498835, 24598602, 27331780, 35140860, 40997670, 49197204, 61496505, 81995340, 122993010, 245986020]

約数ペア:

[(1, 245986020), (2, 122993010), (3, 81995340), (4, 61496505), (5, 49197204), (6, 40997670), (7, 35140860), (9, 27331780), (10, 24598602), (12, 20498835), (14, 17570430), (15, 16399068), (18, 13665890), (20, 12299301), (21, 11713620), (28, 8785215), (30, 8199534), (35, 7028172), (36, 6832945), (42, 5856810), (45, 5466356), (60, 4099767), (63, 3904540), (70, 3514086), (84, 2928405), (90, 2733178), (105, 2342724), (126, 1952270), (140, 1757043), (180, 1366589), (197, 1248660), (210, 1171362), (252, 976135), (315, 780908), (394, 624330), (420, 585681), (591, 416220), (630, 390454), (788, 312165), (985, 249732), (991, 248220), (1182, 208110), (1260, 195227), (1379, 178380), (1773, 138740), (1970, 124866), (1982, 124110), (2364, 104055), (2758, 89190), (2955, 83244), (2973, 82740), (3546, 69370), (3940, 62433), (3964, 62055), (4137, 59460), (4955, 49644), (5516, 44595), (5910, 41622), (5946, 41370), (6895, 35676), (6937, 35460), (7092, 34685), (8274, 29730), (8865, 27748), (8919, 27580), (9910, 24822), (11820, 20811), (11892, 20685), (12411, 19820), (13790, 17838), (13874, 17730), (14865, 16548)]