13219720

素因数分解:

$2^3\times 5^1\times {\mathrm{167}}^1\times {\mathrm{1979}}^1$

素因数の和:2157

約数の個数: 32

約数和(自身を含む): 29937600

約数和(自身を除く): 16717880

約数列:

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

約数ペア:

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