640404720

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{179}}^1\times {\mathrm{4969}}^1$

素因数の和:5167

約数の個数: 120

約数和(自身を含む): 2163142800

約数和(自身を除く): 1522738080

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 179, 180, 240, 358, 360, 537, 716, 720, 895, 1074, 1432, 1611, 1790, 2148, 2685, 2864, 3222, 3580, 4296, 4969, 5370, 6444, 7160, 8055, 8592, 9938, 10740, 12888, 14320, 14907, 16110, 19876, 21480, 24845, 25776, 29814, 32220, 39752, 42960, 44721, 49690, 59628, 64440, 74535, 79504, 89442, 99380, 119256, 128880, 149070, 178884, 198760, 223605, 238512, 298140, 357768, 397520, 447210, 596280, 715536, 889451, 894420, 1192560, 1778902, 1788840, 2668353, 3557804, 3577680, 4447255, 5336706, 7115608, 8005059, 8894510, 10673412, 13341765, 14231216, 16010118, 17789020, 21346824, 26683530, 32020236, 35578040, 40025295, 42693648, 53367060, 64040472, 71156080, 80050590, 106734120, 128080944, 160101180, 213468240, 320202360, 640404720]

約数ペア:

[(1, 640404720), (2, 320202360), (3, 213468240), (4, 160101180), (5, 128080944), (6, 106734120), (8, 80050590), (9, 71156080), (10, 64040472), (12, 53367060), (15, 42693648), (16, 40025295), (18, 35578040), (20, 32020236), (24, 26683530), (30, 21346824), (36, 17789020), (40, 16010118), (45, 14231216), (48, 13341765), (60, 10673412), (72, 8894510), (80, 8005059), (90, 7115608), (120, 5336706), (144, 4447255), (179, 3577680), (180, 3557804), (240, 2668353), (358, 1788840), (360, 1778902), (537, 1192560), (716, 894420), (720, 889451), (895, 715536), (1074, 596280), (1432, 447210), (1611, 397520), (1790, 357768), (2148, 298140), (2685, 238512), (2864, 223605), (3222, 198760), (3580, 178884), (4296, 149070), (4969, 128880), (5370, 119256), (6444, 99380), (7160, 89442), (8055, 79504), (8592, 74535), (9938, 64440), (10740, 59628), (12888, 49690), (14320, 44721), (14907, 42960), (16110, 39752), (19876, 32220), (21480, 29814), (24845, 25776)]