278313720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{193}}^1\times {\mathrm{197}}^1$

素因数の和:465

約数の個数: 128

約数和(自身を含む): 857355840

約数和(自身を除く): 579042120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 61, 120, 122, 183, 193, 197, 244, 305, 366, 386, 394, 488, 579, 591, 610, 732, 772, 788, 915, 965, 985, 1158, 1182, 1220, 1464, 1544, 1576, 1830, 1930, 1970, 2316, 2364, 2440, 2895, 2955, 3660, 3860, 3940, 4632, 4728, 5790, 5910, 7320, 7720, 7880, 11580, 11773, 11820, 12017, 23160, 23546, 23640, 24034, 35319, 36051, 38021, 47092, 48068, 58865, 60085, 70638, 72102, 76042, 94184, 96136, 114063, 117730, 120170, 141276, 144204, 152084, 176595, 180255, 190105, 228126, 235460, 240340, 282552, 288408, 304168, 353190, 360510, 380210, 456252, 470920, 480680, 570315, 706380, 721020, 760420, 912504, 1140630, 1412760, 1442040, 1520840, 2281260, 2319281, 4562520, 4638562, 6957843, 9277124, 11596405, 13915686, 18554248, 23192810, 27831372, 34789215, 46385620, 55662744, 69578430, 92771240, 139156860, 278313720]

約数ペア:

[(1, 278313720), (2, 139156860), (3, 92771240), (4, 69578430), (5, 55662744), (6, 46385620), (8, 34789215), (10, 27831372), (12, 23192810), (15, 18554248), (20, 13915686), (24, 11596405), (30, 9277124), (40, 6957843), (60, 4638562), (61, 4562520), (120, 2319281), (122, 2281260), (183, 1520840), (193, 1442040), (197, 1412760), (244, 1140630), (305, 912504), (366, 760420), (386, 721020), (394, 706380), (488, 570315), (579, 480680), (591, 470920), (610, 456252), (732, 380210), (772, 360510), (788, 353190), (915, 304168), (965, 288408), (985, 282552), (1158, 240340), (1182, 235460), (1220, 228126), (1464, 190105), (1544, 180255), (1576, 176595), (1830, 152084), (1930, 144204), (1970, 141276), (2316, 120170), (2364, 117730), (2440, 114063), (2895, 96136), (2955, 94184), (3660, 76042), (3860, 72102), (3940, 70638), (4632, 60085), (4728, 58865), (5790, 48068), (5910, 47092), (7320, 38021), (7720, 36051), (7880, 35319), (11580, 24034), (11773, 23640), (11820, 23546), (12017, 23160)]