26439440

素因数分解:

$2^4\times 5^1\times {\mathrm{167}}^1\times {\mathrm{1979}}^1$

素因数の和:2159

約数の個数: 40

約数和(自身を含む): 61871040

約数和(自身を除く): 35431600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 167, 334, 668, 835, 1336, 1670, 1979, 2672, 3340, 3958, 6680, 7916, 9895, 13360, 15832, 19790, 31664, 39580, 79160, 158320, 330493, 660986, 1321972, 1652465, 2643944, 3304930, 5287888, 6609860, 13219720, 26439440]

約数ペア:

[(1, 26439440), (2, 13219720), (4, 6609860), (5, 5287888), (8, 3304930), (10, 2643944), (16, 1652465), (20, 1321972), (40, 660986), (80, 330493), (167, 158320), (334, 79160), (668, 39580), (835, 31664), (1336, 19790), (1670, 15832), (1979, 13360), (2672, 9895), (3340, 7916), (3958, 6680)]