261440

素因数分解:

$2^6\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1$

素因数の和:79

約数の個数: 56

約数和(自身を含む): 670560

約数和(自身を除く): 409120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 43, 64, 76, 80, 86, 95, 152, 160, 172, 190, 215, 304, 320, 344, 380, 430, 608, 688, 760, 817, 860, 1216, 1376, 1520, 1634, 1720, 2752, 3040, 3268, 3440, 4085, 6080, 6536, 6880, 8170, 13072, 13760, 16340, 26144, 32680, 52288, 65360, 130720, 261440]

約数ペア:

[(1, 261440), (2, 130720), (4, 65360), (5, 52288), (8, 32680), (10, 26144), (16, 16340), (19, 13760), (20, 13072), (32, 8170), (38, 6880), (40, 6536), (43, 6080), (64, 4085), (76, 3440), (80, 3268), (86, 3040), (95, 2752), (152, 1720), (160, 1634), (172, 1520), (190, 1376), (215, 1216), (304, 860), (320, 817), (344, 760), (380, 688), (430, 608)]