668927920

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1$

素因数の和:275

約数の個数: 160

約数和(自身を含む): 1697034240

約数和(自身を除く): 1028106320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 31, 40, 58, 62, 71, 80, 116, 124, 131, 142, 145, 155, 232, 248, 262, 284, 290, 310, 355, 464, 496, 524, 568, 580, 620, 655, 710, 899, 1048, 1136, 1160, 1240, 1310, 1420, 1798, 2059, 2096, 2201, 2320, 2480, 2620, 2840, 3596, 3799, 4061, 4118, 4402, 4495, 5240, 5680, 7192, 7598, 8122, 8236, 8804, 8990, 9301, 10295, 10480, 11005, 14384, 15196, 16244, 16472, 17608, 17980, 18602, 18995, 20305, 20590, 22010, 30392, 32488, 32944, 35216, 35960, 37204, 37990, 40610, 41180, 44020, 46505, 60784, 63829, 64976, 71920, 74408, 75980, 81220, 82360, 88040, 93010, 117769, 127658, 148816, 151960, 162440, 164720, 176080, 186020, 235538, 255316, 269729, 288331, 303920, 319145, 324880, 372040, 471076, 510632, 539458, 576662, 588845, 638290, 744080, 942152, 1021264, 1078916, 1153324, 1177690, 1276580, 1348645, 1441655, 1884304, 2157832, 2306648, 2355380, 2553160, 2697290, 2883310, 4315664, 4613296, 4710760, 5106320, 5394580, 5766620, 8361599, 9421520, 10789160, 11533240, 16723198, 21578320, 23066480, 33446396, 41807995, 66892792, 83615990, 133785584, 167231980, 334463960, 668927920]

約数ペア:

[(1, 668927920), (2, 334463960), (4, 167231980), (5, 133785584), (8, 83615990), (10, 66892792), (16, 41807995), (20, 33446396), (29, 23066480), (31, 21578320), (40, 16723198), (58, 11533240), (62, 10789160), (71, 9421520), (80, 8361599), (116, 5766620), (124, 5394580), (131, 5106320), (142, 4710760), (145, 4613296), (155, 4315664), (232, 2883310), (248, 2697290), (262, 2553160), (284, 2355380), (290, 2306648), (310, 2157832), (355, 1884304), (464, 1441655), (496, 1348645), (524, 1276580), (568, 1177690), (580, 1153324), (620, 1078916), (655, 1021264), (710, 942152), (899, 744080), (1048, 638290), (1136, 588845), (1160, 576662), (1240, 539458), (1310, 510632), (1420, 471076), (1798, 372040), (2059, 324880), (2096, 319145), (2201, 303920), (2320, 288331), (2480, 269729), (2620, 255316), (2840, 235538), (3596, 186020), (3799, 176080), (4061, 164720), (4118, 162440), (4402, 151960), (4495, 148816), (5240, 127658), (5680, 117769), (7192, 93010), (7598, 88040), (8122, 82360), (8236, 81220), (8804, 75980), (8990, 74408), (9301, 71920), (10295, 64976), (10480, 63829), (11005, 60784), (14384, 46505), (15196, 44020), (16244, 41180), (16472, 40610), (17608, 37990), (17980, 37204), (18602, 35960), (18995, 35216), (20305, 32944), (20590, 32488), (22010, 30392)]