131221320

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{149}}^1\times {\mathrm{179}}^1$

素因数の和:383

約数の個数: 128

約数和(自身を含む): 408240000

約数和(自身を除く): 277018680

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 41, 60, 82, 120, 123, 149, 164, 179, 205, 246, 298, 328, 358, 410, 447, 492, 537, 596, 615, 716, 745, 820, 894, 895, 984, 1074, 1192, 1230, 1432, 1490, 1640, 1788, 1790, 2148, 2235, 2460, 2685, 2980, 3576, 3580, 4296, 4470, 4920, 5370, 5960, 6109, 7160, 7339, 8940, 10740, 12218, 14678, 17880, 18327, 21480, 22017, 24436, 26671, 29356, 30545, 36654, 36695, 44034, 48872, 53342, 58712, 61090, 73308, 73390, 80013, 88068, 91635, 106684, 110085, 122180, 133355, 146616, 146780, 160026, 176136, 183270, 213368, 220170, 244360, 266710, 293560, 320052, 366540, 400065, 440340, 533420, 640104, 733080, 800130, 880680, 1066840, 1093511, 1600260, 2187022, 3200520, 3280533, 4374044, 5467555, 6561066, 8748088, 10935110, 13122132, 16402665, 21870220, 26244264, 32805330, 43740440, 65610660, 131221320]

約数ペア:

[(1, 131221320), (2, 65610660), (3, 43740440), (4, 32805330), (5, 26244264), (6, 21870220), (8, 16402665), (10, 13122132), (12, 10935110), (15, 8748088), (20, 6561066), (24, 5467555), (30, 4374044), (40, 3280533), (41, 3200520), (60, 2187022), (82, 1600260), (120, 1093511), (123, 1066840), (149, 880680), (164, 800130), (179, 733080), (205, 640104), (246, 533420), (298, 440340), (328, 400065), (358, 366540), (410, 320052), (447, 293560), (492, 266710), (537, 244360), (596, 220170), (615, 213368), (716, 183270), (745, 176136), (820, 160026), (894, 146780), (895, 146616), (984, 133355), (1074, 122180), (1192, 110085), (1230, 106684), (1432, 91635), (1490, 88068), (1640, 80013), (1788, 73390), (1790, 73308), (2148, 61090), (2235, 58712), (2460, 53342), (2685, 48872), (2980, 44034), (3576, 36695), (3580, 36654), (4296, 30545), (4470, 29356), (4920, 26671), (5370, 24436), (5960, 22017), (6109, 21480), (7160, 18327), (7339, 17880), (8940, 14678), (10740, 12218)]