87868880

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{3221}}^1$

素因数の和:3276

約数の個数: 80

約数和(自身を含む): 230128128

約数和(自身を除く): 142259248

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 31, 40, 44, 55, 62, 80, 88, 110, 124, 155, 176, 220, 248, 310, 341, 440, 496, 620, 682, 880, 1240, 1364, 1705, 2480, 2728, 3221, 3410, 5456, 6442, 6820, 12884, 13640, 16105, 25768, 27280, 32210, 35431, 51536, 64420, 70862, 99851, 128840, 141724, 177155, 199702, 257680, 283448, 354310, 399404, 499255, 566896, 708620, 798808, 998510, 1098361, 1417240, 1597616, 1997020, 2196722, 2834480, 3994040, 4393444, 5491805, 7988080, 8786888, 10983610, 17573776, 21967220, 43934440, 87868880]

約数ペア:

[(1, 87868880), (2, 43934440), (4, 21967220), (5, 17573776), (8, 10983610), (10, 8786888), (11, 7988080), (16, 5491805), (20, 4393444), (22, 3994040), (31, 2834480), (40, 2196722), (44, 1997020), (55, 1597616), (62, 1417240), (80, 1098361), (88, 998510), (110, 798808), (124, 708620), (155, 566896), (176, 499255), (220, 399404), (248, 354310), (310, 283448), (341, 257680), (440, 199702), (496, 177155), (620, 141724), (682, 128840), (880, 99851), (1240, 70862), (1364, 64420), (1705, 51536), (2480, 35431), (2728, 32210), (3221, 27280), (3410, 25768), (5456, 16105), (6442, 13640), (6820, 12884)]