646927840

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{127}}^1$

素因数の和:265

約数の個数: 192

約数和(自身を含む): 1734082560

約数和(自身を除く): 1087154720

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 65, 79, 80, 104, 124, 127, 130, 155, 158, 160, 208, 248, 254, 260, 310, 316, 395, 403, 416, 496, 508, 520, 620, 632, 635, 790, 806, 992, 1016, 1027, 1040, 1240, 1264, 1270, 1580, 1612, 1651, 2015, 2032, 2054, 2080, 2449, 2480, 2528, 2540, 3160, 3224, 3302, 3937, 4030, 4064, 4108, 4898, 4960, 5080, 5135, 6320, 6448, 6604, 7874, 8060, 8216, 8255, 9796, 10033, 10160, 10270, 12245, 12640, 12896, 13208, 15748, 16120, 16432, 16510, 19592, 19685, 20066, 20320, 20540, 24490, 26416, 31496, 31837, 32240, 32864, 33020, 39184, 39370, 40132, 41080, 48980, 50165, 51181, 52832, 62992, 63674, 64480, 66040, 78368, 78740, 80264, 82160, 97960, 100330, 102362, 125984, 127348, 130429, 132080, 157480, 159185, 160528, 164320, 195920, 200660, 204724, 254696, 255905, 260858, 264160, 311023, 314960, 318370, 321056, 391840, 401320, 409448, 509392, 511810, 521716, 622046, 629920, 636740, 652145, 802640, 818896, 1018784, 1023620, 1043432, 1244092, 1273480, 1304290, 1555115, 1605280, 1637792, 2047240, 2086864, 2488184, 2546960, 2608580, 3110230, 4043299, 4094480, 4173728, 4976368, 5093920, 5217160, 6220460, 8086598, 8188960, 9952736, 10434320, 12440920, 16173196, 20216495, 20868640, 24881840, 32346392, 40432990, 49763680, 64692784, 80865980, 129385568, 161731960, 323463920, 646927840]

約数ペア:

[(1, 646927840), (2, 323463920), (4, 161731960), (5, 129385568), (8, 80865980), (10, 64692784), (13, 49763680), (16, 40432990), (20, 32346392), (26, 24881840), (31, 20868640), (32, 20216495), (40, 16173196), (52, 12440920), (62, 10434320), (65, 9952736), (79, 8188960), (80, 8086598), (104, 6220460), (124, 5217160), (127, 5093920), (130, 4976368), (155, 4173728), (158, 4094480), (160, 4043299), (208, 3110230), (248, 2608580), (254, 2546960), (260, 2488184), (310, 2086864), (316, 2047240), (395, 1637792), (403, 1605280), (416, 1555115), (496, 1304290), (508, 1273480), (520, 1244092), (620, 1043432), (632, 1023620), (635, 1018784), (790, 818896), (806, 802640), (992, 652145), (1016, 636740), (1027, 629920), (1040, 622046), (1240, 521716), (1264, 511810), (1270, 509392), (1580, 409448), (1612, 401320), (1651, 391840), (2015, 321056), (2032, 318370), (2054, 314960), (2080, 311023), (2449, 264160), (2480, 260858), (2528, 255905), (2540, 254696), (3160, 204724), (3224, 200660), (3302, 195920), (3937, 164320), (4030, 160528), (4064, 159185), (4108, 157480), (4898, 132080), (4960, 130429), (5080, 127348), (5135, 125984), (6320, 102362), (6448, 100330), (6604, 97960), (7874, 82160), (8060, 80264), (8216, 78740), (8255, 78368), (9796, 66040), (10033, 64480), (10160, 63674), (10270, 62992), (12245, 52832), (12640, 51181), (12896, 50165), (13208, 48980), (15748, 41080), (16120, 40132), (16432, 39370), (16510, 39184), (19592, 33020), (19685, 32864), (20066, 32240), (20320, 31837), (20540, 31496), (24490, 26416)]