320397440

素因数分解:

$2^7\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{641}}^1$

素因数の和:742

約数の個数: 128

約数和(自身を含む): 848672640

約数和(自身を除く): 528275200

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 71, 80, 88, 110, 128, 142, 160, 176, 220, 284, 320, 352, 355, 440, 568, 640, 641, 704, 710, 781, 880, 1136, 1282, 1408, 1420, 1562, 1760, 2272, 2564, 2840, 3124, 3205, 3520, 3905, 4544, 5128, 5680, 6248, 6410, 7040, 7051, 7810, 9088, 10256, 11360, 12496, 12820, 14102, 15620, 20512, 22720, 24992, 25640, 28204, 31240, 35255, 41024, 45440, 45511, 49984, 51280, 56408, 62480, 70510, 82048, 91022, 99968, 102560, 112816, 124960, 141020, 182044, 205120, 225632, 227555, 249920, 282040, 364088, 410240, 451264, 455110, 499840, 500621, 564080, 728176, 902528, 910220, 1001242, 1128160, 1456352, 1820440, 2002484, 2256320, 2503105, 2912704, 3640880, 4004968, 4512640, 5006210, 5825408, 7281760, 8009936, 10012420, 14563520, 16019872, 20024840, 29127040, 32039744, 40049680, 64079488, 80099360, 160198720, 320397440]

約数ペア:

[(1, 320397440), (2, 160198720), (4, 80099360), (5, 64079488), (8, 40049680), (10, 32039744), (11, 29127040), (16, 20024840), (20, 16019872), (22, 14563520), (32, 10012420), (40, 8009936), (44, 7281760), (55, 5825408), (64, 5006210), (71, 4512640), (80, 4004968), (88, 3640880), (110, 2912704), (128, 2503105), (142, 2256320), (160, 2002484), (176, 1820440), (220, 1456352), (284, 1128160), (320, 1001242), (352, 910220), (355, 902528), (440, 728176), (568, 564080), (640, 500621), (641, 499840), (704, 455110), (710, 451264), (781, 410240), (880, 364088), (1136, 282040), (1282, 249920), (1408, 227555), (1420, 225632), (1562, 205120), (1760, 182044), (2272, 141020), (2564, 124960), (2840, 112816), (3124, 102560), (3205, 99968), (3520, 91022), (3905, 82048), (4544, 70510), (5128, 62480), (5680, 56408), (6248, 51280), (6410, 49984), (7040, 45511), (7051, 45440), (7810, 41024), (9088, 35255), (10256, 31240), (11360, 28204), (12496, 25640), (12820, 24992), (14102, 22720), (15620, 20512)]