18720036

素因数分解:

$2^2\times 3^2\times {\mathrm{331}}^1\times {\mathrm{1571}}^1$

素因数の和:1912

約数の個数: 36

約数和(自身を含む): 47493264

約数和(自身を除く): 28773228

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 331, 662, 993, 1324, 1571, 1986, 2979, 3142, 3972, 4713, 5958, 6284, 9426, 11916, 14139, 18852, 28278, 56556, 520001, 1040002, 1560003, 2080004, 3120006, 4680009, 6240012, 9360018, 18720036]

約数ペア:

[(1, 18720036), (2, 9360018), (3, 6240012), (4, 4680009), (6, 3120006), (9, 2080004), (12, 1560003), (18, 1040002), (36, 520001), (331, 56556), (662, 28278), (993, 18852), (1324, 14139), (1571, 11916), (1986, 9426), (2979, 6284), (3142, 5958), (3972, 4713)]