81761680

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1021}}^1$

素因数の和:1065

約数の個数: 160

約数和(自身を含む): 255483648

約数和(自身を除く): 173721968

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 16, 20, 22, 26, 28, 35, 40, 44, 52, 55, 56, 65, 70, 77, 80, 88, 91, 104, 110, 112, 130, 140, 143, 154, 176, 182, 208, 220, 260, 280, 286, 308, 364, 385, 440, 455, 520, 560, 572, 616, 715, 728, 770, 880, 910, 1001, 1021, 1040, 1144, 1232, 1430, 1456, 1540, 1820, 2002, 2042, 2288, 2860, 3080, 3640, 4004, 4084, 5005, 5105, 5720, 6160, 7147, 7280, 8008, 8168, 10010, 10210, 11231, 11440, 13273, 14294, 16016, 16336, 20020, 20420, 22462, 26546, 28588, 35735, 40040, 40840, 44924, 53092, 56155, 57176, 66365, 71470, 78617, 80080, 81680, 89848, 92911, 106184, 112310, 114352, 132730, 142940, 146003, 157234, 179696, 185822, 212368, 224620, 265460, 285880, 292006, 314468, 371644, 393085, 449240, 464555, 530920, 571760, 584012, 628936, 730015, 743288, 786170, 898480, 929110, 1022021, 1061840, 1168024, 1257872, 1460030, 1486576, 1572340, 1858220, 2044042, 2336048, 2920060, 3144680, 3716440, 4088084, 5110105, 5840120, 6289360, 7432880, 8176168, 10220210, 11680240, 16352336, 20440420, 40880840, 81761680]

約数ペア:

[(1, 81761680), (2, 40880840), (4, 20440420), (5, 16352336), (7, 11680240), (8, 10220210), (10, 8176168), (11, 7432880), (13, 6289360), (14, 5840120), (16, 5110105), (20, 4088084), (22, 3716440), (26, 3144680), (28, 2920060), (35, 2336048), (40, 2044042), (44, 1858220), (52, 1572340), (55, 1486576), (56, 1460030), (65, 1257872), (70, 1168024), (77, 1061840), (80, 1022021), (88, 929110), (91, 898480), (104, 786170), (110, 743288), (112, 730015), (130, 628936), (140, 584012), (143, 571760), (154, 530920), (176, 464555), (182, 449240), (208, 393085), (220, 371644), (260, 314468), (280, 292006), (286, 285880), (308, 265460), (364, 224620), (385, 212368), (440, 185822), (455, 179696), (520, 157234), (560, 146003), (572, 142940), (616, 132730), (715, 114352), (728, 112310), (770, 106184), (880, 92911), (910, 89848), (1001, 81680), (1021, 80080), (1040, 78617), (1144, 71470), (1232, 66365), (1430, 57176), (1456, 56155), (1540, 53092), (1820, 44924), (2002, 40840), (2042, 40040), (2288, 35735), (2860, 28588), (3080, 26546), (3640, 22462), (4004, 20420), (4084, 20020), (5005, 16336), (5105, 16016), (5720, 14294), (6160, 13273), (7147, 11440), (7280, 11231), (8008, 10210), (8168, 10010)]