221369520

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{97}}^1\times {\mathrm{257}}^1$

素因数の和:407

約数の個数: 160

約数和(自身を含む): 714829248

約数和(自身を除く): 493459728

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 37, 40, 48, 60, 74, 80, 97, 111, 120, 148, 185, 194, 222, 240, 257, 291, 296, 370, 388, 444, 485, 514, 555, 582, 592, 740, 771, 776, 888, 970, 1028, 1110, 1164, 1285, 1455, 1480, 1542, 1552, 1776, 1940, 2056, 2220, 2328, 2570, 2910, 2960, 3084, 3589, 3855, 3880, 4112, 4440, 4656, 5140, 5820, 6168, 7178, 7710, 7760, 8880, 9509, 10280, 10767, 11640, 12336, 14356, 15420, 17945, 19018, 20560, 21534, 23280, 24929, 28527, 28712, 30840, 35890, 38036, 43068, 47545, 49858, 53835, 57054, 57424, 61680, 71780, 74787, 76072, 86136, 95090, 99716, 107670, 114108, 124645, 142635, 143560, 149574, 152144, 172272, 190180, 199432, 215340, 228216, 249290, 285270, 287120, 299148, 373935, 380360, 398864, 430680, 456432, 498580, 570540, 598296, 747870, 760720, 861360, 922373, 997160, 1141080, 1196592, 1495740, 1844746, 1994320, 2282160, 2767119, 2991480, 3689492, 4611865, 5534238, 5982960, 7378984, 9223730, 11068476, 13835595, 14757968, 18447460, 22136952, 27671190, 36894920, 44273904, 55342380, 73789840, 110684760, 221369520]

約数ペア:

[(1, 221369520), (2, 110684760), (3, 73789840), (4, 55342380), (5, 44273904), (6, 36894920), (8, 27671190), (10, 22136952), (12, 18447460), (15, 14757968), (16, 13835595), (20, 11068476), (24, 9223730), (30, 7378984), (37, 5982960), (40, 5534238), (48, 4611865), (60, 3689492), (74, 2991480), (80, 2767119), (97, 2282160), (111, 1994320), (120, 1844746), (148, 1495740), (185, 1196592), (194, 1141080), (222, 997160), (240, 922373), (257, 861360), (291, 760720), (296, 747870), (370, 598296), (388, 570540), (444, 498580), (485, 456432), (514, 430680), (555, 398864), (582, 380360), (592, 373935), (740, 299148), (771, 287120), (776, 285270), (888, 249290), (970, 228216), (1028, 215340), (1110, 199432), (1164, 190180), (1285, 172272), (1455, 152144), (1480, 149574), (1542, 143560), (1552, 142635), (1776, 124645), (1940, 114108), (2056, 107670), (2220, 99716), (2328, 95090), (2570, 86136), (2910, 76072), (2960, 74787), (3084, 71780), (3589, 61680), (3855, 57424), (3880, 57054), (4112, 53835), (4440, 49858), (4656, 47545), (5140, 43068), (5820, 38036), (6168, 35890), (7178, 30840), (7710, 28712), (7760, 28527), (8880, 24929), (9509, 23280), (10280, 21534), (10767, 20560), (11640, 19018), (12336, 17945), (14356, 15420)]