81195520

素因数分解:

$2^9\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{197}}^1$

素因数の和:250

約数の個数: 160

約数和(自身を含む): 233342208

約数和(自身を除く): 152146688

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 32, 35, 40, 46, 56, 64, 70, 80, 92, 112, 115, 128, 140, 160, 161, 184, 197, 224, 230, 256, 280, 320, 322, 368, 394, 448, 460, 512, 560, 640, 644, 736, 788, 805, 896, 920, 985, 1120, 1280, 1288, 1379, 1472, 1576, 1610, 1792, 1840, 1970, 2240, 2560, 2576, 2758, 2944, 3152, 3220, 3584, 3680, 3940, 4480, 4531, 5152, 5516, 5888, 6304, 6440, 6895, 7360, 7880, 8960, 9062, 10304, 11032, 11776, 12608, 12880, 13790, 14720, 15760, 17920, 18124, 20608, 22064, 22655, 25216, 25760, 27580, 29440, 31520, 31717, 36248, 41216, 44128, 45310, 50432, 51520, 55160, 58880, 63040, 63434, 72496, 82432, 88256, 90620, 100864, 103040, 110320, 126080, 126868, 144992, 158585, 176512, 181240, 206080, 220640, 252160, 253736, 289984, 317170, 353024, 362480, 412160, 441280, 504320, 507472, 579968, 634340, 706048, 724960, 882560, 1014944, 1159936, 1268680, 1449920, 1765120, 2029888, 2319872, 2537360, 2899840, 3530240, 4059776, 5074720, 5799680, 8119552, 10149440, 11599360, 16239104, 20298880, 40597760, 81195520]

約数ペア:

[(1, 81195520), (2, 40597760), (4, 20298880), (5, 16239104), (7, 11599360), (8, 10149440), (10, 8119552), (14, 5799680), (16, 5074720), (20, 4059776), (23, 3530240), (28, 2899840), (32, 2537360), (35, 2319872), (40, 2029888), (46, 1765120), (56, 1449920), (64, 1268680), (70, 1159936), (80, 1014944), (92, 882560), (112, 724960), (115, 706048), (128, 634340), (140, 579968), (160, 507472), (161, 504320), (184, 441280), (197, 412160), (224, 362480), (230, 353024), (256, 317170), (280, 289984), (320, 253736), (322, 252160), (368, 220640), (394, 206080), (448, 181240), (460, 176512), (512, 158585), (560, 144992), (640, 126868), (644, 126080), (736, 110320), (788, 103040), (805, 100864), (896, 90620), (920, 88256), (985, 82432), (1120, 72496), (1280, 63434), (1288, 63040), (1379, 58880), (1472, 55160), (1576, 51520), (1610, 50432), (1792, 45310), (1840, 44128), (1970, 41216), (2240, 36248), (2560, 31717), (2576, 31520), (2758, 29440), (2944, 27580), (3152, 25760), (3220, 25216), (3584, 22655), (3680, 22064), (3940, 20608), (4480, 18124), (4531, 17920), (5152, 15760), (5516, 14720), (5888, 13790), (6304, 12880), (6440, 12608), (6895, 11776), (7360, 11032), (7880, 10304), (8960, 9062)]