130720

素因数分解:

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

素因数の和:77

約数の個数: 48

約数和(自身を含む): 332640

約数和(自身を除く): 201920

約数列:

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

約数ペア:

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