81666560

素因数分解:

$2^9\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1$

素因数の和:138

約数の個数: 160

約数和(自身を含む): 218021760

約数和(自身を除く): 136355200

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 23, 32, 38, 40, 46, 64, 73, 76, 80, 92, 95, 115, 128, 146, 152, 160, 184, 190, 230, 256, 292, 304, 320, 365, 368, 380, 437, 460, 512, 584, 608, 640, 730, 736, 760, 874, 920, 1168, 1216, 1280, 1387, 1460, 1472, 1520, 1679, 1748, 1840, 2185, 2336, 2432, 2560, 2774, 2920, 2944, 3040, 3358, 3496, 3680, 4370, 4672, 4864, 5548, 5840, 5888, 6080, 6716, 6935, 6992, 7360, 8395, 8740, 9344, 9728, 11096, 11680, 11776, 12160, 13432, 13870, 13984, 14720, 16790, 17480, 18688, 22192, 23360, 24320, 26864, 27740, 27968, 29440, 31901, 33580, 34960, 37376, 44384, 46720, 48640, 53728, 55480, 55936, 58880, 63802, 67160, 69920, 88768, 93440, 107456, 110960, 111872, 127604, 134320, 139840, 159505, 177536, 186880, 214912, 221920, 223744, 255208, 268640, 279680, 319010, 355072, 429824, 443840, 510416, 537280, 559360, 638020, 710144, 859648, 887680, 1020832, 1074560, 1118720, 1276040, 1775360, 2041664, 2149120, 2552080, 3550720, 4083328, 4298240, 5104160, 8166656, 10208320, 16333312, 20416640, 40833280, 81666560]

約数ペア:

[(1, 81666560), (2, 40833280), (4, 20416640), (5, 16333312), (8, 10208320), (10, 8166656), (16, 5104160), (19, 4298240), (20, 4083328), (23, 3550720), (32, 2552080), (38, 2149120), (40, 2041664), (46, 1775360), (64, 1276040), (73, 1118720), (76, 1074560), (80, 1020832), (92, 887680), (95, 859648), (115, 710144), (128, 638020), (146, 559360), (152, 537280), (160, 510416), (184, 443840), (190, 429824), (230, 355072), (256, 319010), (292, 279680), (304, 268640), (320, 255208), (365, 223744), (368, 221920), (380, 214912), (437, 186880), (460, 177536), (512, 159505), (584, 139840), (608, 134320), (640, 127604), (730, 111872), (736, 110960), (760, 107456), (874, 93440), (920, 88768), (1168, 69920), (1216, 67160), (1280, 63802), (1387, 58880), (1460, 55936), (1472, 55480), (1520, 53728), (1679, 48640), (1748, 46720), (1840, 44384), (2185, 37376), (2336, 34960), (2432, 33580), (2560, 31901), (2774, 29440), (2920, 27968), (2944, 27740), (3040, 26864), (3358, 24320), (3496, 23360), (3680, 22192), (4370, 18688), (4672, 17480), (4864, 16790), (5548, 14720), (5840, 13984), (5888, 13870), (6080, 13432), (6716, 12160), (6935, 11776), (6992, 11680), (7360, 11096), (8395, 9728), (8740, 9344)]