80385920

素因数分解:

$2^7\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1$

素因数の和:212

約数の個数: 128

約数和(自身を含む): 206807040

約数和(自身を除く): 126421120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 43, 46, 64, 80, 86, 92, 115, 127, 128, 160, 172, 184, 215, 230, 254, 320, 344, 368, 430, 460, 508, 635, 640, 688, 736, 860, 920, 989, 1016, 1270, 1376, 1472, 1720, 1840, 1978, 2032, 2540, 2752, 2921, 2944, 3440, 3680, 3956, 4064, 4945, 5080, 5461, 5504, 5842, 6880, 7360, 7912, 8128, 9890, 10160, 10922, 11684, 13760, 14605, 14720, 15824, 16256, 19780, 20320, 21844, 23368, 27305, 27520, 29210, 31648, 39560, 40640, 43688, 46736, 54610, 58420, 63296, 79120, 81280, 87376, 93472, 109220, 116840, 125603, 126592, 158240, 174752, 186944, 218440, 233680, 251206, 316480, 349504, 373888, 436880, 467360, 502412, 628015, 632960, 699008, 873760, 934720, 1004824, 1256030, 1747520, 1869440, 2009648, 2512060, 3495040, 4019296, 5024120, 8038592, 10048240, 16077184, 20096480, 40192960, 80385920]

約数ペア:

[(1, 80385920), (2, 40192960), (4, 20096480), (5, 16077184), (8, 10048240), (10, 8038592), (16, 5024120), (20, 4019296), (23, 3495040), (32, 2512060), (40, 2009648), (43, 1869440), (46, 1747520), (64, 1256030), (80, 1004824), (86, 934720), (92, 873760), (115, 699008), (127, 632960), (128, 628015), (160, 502412), (172, 467360), (184, 436880), (215, 373888), (230, 349504), (254, 316480), (320, 251206), (344, 233680), (368, 218440), (430, 186944), (460, 174752), (508, 158240), (635, 126592), (640, 125603), (688, 116840), (736, 109220), (860, 93472), (920, 87376), (989, 81280), (1016, 79120), (1270, 63296), (1376, 58420), (1472, 54610), (1720, 46736), (1840, 43688), (1978, 40640), (2032, 39560), (2540, 31648), (2752, 29210), (2921, 27520), (2944, 27305), (3440, 23368), (3680, 21844), (3956, 20320), (4064, 19780), (4945, 16256), (5080, 15824), (5461, 14720), (5504, 14605), (5842, 13760), (6880, 11684), (7360, 10922), (7912, 10160), (8128, 9890)]