81635840

素因数分解:

$2^9\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{223}}^1$

素因数の和:270

約数の個数: 160

約数和(自身を含む): 230985216

約数和(自身を除く): 149349376

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 26, 32, 40, 44, 52, 55, 64, 65, 80, 88, 104, 110, 128, 130, 143, 160, 176, 208, 220, 223, 256, 260, 286, 320, 352, 416, 440, 446, 512, 520, 572, 640, 704, 715, 832, 880, 892, 1040, 1115, 1144, 1280, 1408, 1430, 1664, 1760, 1784, 2080, 2230, 2288, 2453, 2560, 2816, 2860, 2899, 3328, 3520, 3568, 4160, 4460, 4576, 4906, 5632, 5720, 5798, 6656, 7040, 7136, 8320, 8920, 9152, 9812, 11440, 11596, 12265, 14080, 14272, 14495, 16640, 17840, 18304, 19624, 22880, 23192, 24530, 28160, 28544, 28990, 31889, 33280, 35680, 36608, 39248, 45760, 46384, 49060, 57088, 57980, 63778, 71360, 73216, 78496, 91520, 92768, 98120, 114176, 115960, 127556, 142720, 156992, 159445, 183040, 185536, 196240, 231920, 255112, 285440, 313984, 318890, 366080, 371072, 392480, 463840, 510224, 570880, 627968, 637780, 742144, 784960, 927680, 1020448, 1255936, 1275560, 1484288, 1569920, 1855360, 2040896, 2551120, 3139840, 3710720, 4081792, 5102240, 6279680, 7421440, 8163584, 10204480, 16327168, 20408960, 40817920, 81635840]

約数ペア:

[(1, 81635840), (2, 40817920), (4, 20408960), (5, 16327168), (8, 10204480), (10, 8163584), (11, 7421440), (13, 6279680), (16, 5102240), (20, 4081792), (22, 3710720), (26, 3139840), (32, 2551120), (40, 2040896), (44, 1855360), (52, 1569920), (55, 1484288), (64, 1275560), (65, 1255936), (80, 1020448), (88, 927680), (104, 784960), (110, 742144), (128, 637780), (130, 627968), (143, 570880), (160, 510224), (176, 463840), (208, 392480), (220, 371072), (223, 366080), (256, 318890), (260, 313984), (286, 285440), (320, 255112), (352, 231920), (416, 196240), (440, 185536), (446, 183040), (512, 159445), (520, 156992), (572, 142720), (640, 127556), (704, 115960), (715, 114176), (832, 98120), (880, 92768), (892, 91520), (1040, 78496), (1115, 73216), (1144, 71360), (1280, 63778), (1408, 57980), (1430, 57088), (1664, 49060), (1760, 46384), (1784, 45760), (2080, 39248), (2230, 36608), (2288, 35680), (2453, 33280), (2560, 31889), (2816, 28990), (2860, 28544), (2899, 28160), (3328, 24530), (3520, 23192), (3568, 22880), (4160, 19624), (4460, 18304), (4576, 17840), (4906, 16640), (5632, 14495), (5720, 14272), (5798, 14080), (6656, 12265), (7040, 11596), (7136, 11440), (8320, 9812), (8920, 9152)]