1285666720

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{157}}^1$

素因数の和:343

約数の個数: 192

約数和(自身を含む): 3424813056

約数和(自身を除く): 2139146336

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 65, 80, 104, 124, 127, 130, 155, 157, 160, 208, 248, 254, 260, 310, 314, 403, 416, 496, 508, 520, 620, 628, 635, 785, 806, 992, 1016, 1040, 1240, 1256, 1270, 1570, 1612, 1651, 2015, 2032, 2041, 2080, 2480, 2512, 2540, 3140, 3224, 3302, 3937, 4030, 4064, 4082, 4867, 4960, 5024, 5080, 6280, 6448, 6604, 7874, 8060, 8164, 8255, 9734, 10160, 10205, 12560, 12896, 13208, 15748, 16120, 16328, 16510, 19468, 19685, 19939, 20320, 20410, 24335, 25120, 26416, 31496, 32240, 32656, 33020, 38936, 39370, 39878, 40820, 48670, 51181, 52832, 62992, 63271, 64480, 65312, 66040, 77872, 78740, 79756, 81640, 97340, 99695, 102362, 125984, 126542, 132080, 155744, 157480, 159512, 163280, 194680, 199390, 204724, 253084, 255905, 259207, 264160, 314960, 316355, 319024, 326560, 389360, 398780, 409448, 506168, 511810, 518414, 618109, 629920, 632710, 638048, 778720, 797560, 818896, 1012336, 1023620, 1036828, 1236218, 1265420, 1296035, 1595120, 1637792, 2024672, 2047240, 2073656, 2472436, 2530840, 2592070, 3090545, 3190240, 4094480, 4147312, 4944872, 5061680, 5184140, 6181090, 8035417, 8188960, 8294624, 9889744, 10123360, 10368280, 12362180, 16070834, 19779488, 20736560, 24724360, 32141668, 40177085, 41473120, 49448720, 64283336, 80354170, 98897440, 128566672, 160708340, 257133344, 321416680, 642833360, 1285666720]

約数ペア:

[(1, 1285666720), (2, 642833360), (4, 321416680), (5, 257133344), (8, 160708340), (10, 128566672), (13, 98897440), (16, 80354170), (20, 64283336), (26, 49448720), (31, 41473120), (32, 40177085), (40, 32141668), (52, 24724360), (62, 20736560), (65, 19779488), (80, 16070834), (104, 12362180), (124, 10368280), (127, 10123360), (130, 9889744), (155, 8294624), (157, 8188960), (160, 8035417), (208, 6181090), (248, 5184140), (254, 5061680), (260, 4944872), (310, 4147312), (314, 4094480), (403, 3190240), (416, 3090545), (496, 2592070), (508, 2530840), (520, 2472436), (620, 2073656), (628, 2047240), (635, 2024672), (785, 1637792), (806, 1595120), (992, 1296035), (1016, 1265420), (1040, 1236218), (1240, 1036828), (1256, 1023620), (1270, 1012336), (1570, 818896), (1612, 797560), (1651, 778720), (2015, 638048), (2032, 632710), (2041, 629920), (2080, 618109), (2480, 518414), (2512, 511810), (2540, 506168), (3140, 409448), (3224, 398780), (3302, 389360), (3937, 326560), (4030, 319024), (4064, 316355), (4082, 314960), (4867, 264160), (4960, 259207), (5024, 255905), (5080, 253084), (6280, 204724), (6448, 199390), (6604, 194680), (7874, 163280), (8060, 159512), (8164, 157480), (8255, 155744), (9734, 132080), (10160, 126542), (10205, 125984), (12560, 102362), (12896, 99695), (13208, 97340), (15748, 81640), (16120, 79756), (16328, 78740), (16510, 77872), (19468, 66040), (19685, 65312), (19939, 64480), (20320, 63271), (20410, 62992), (24335, 52832), (25120, 51181), (26416, 48670), (31496, 40820), (32240, 39878), (32656, 39370), (33020, 38936)]