19438840

素因数分解:

$2^3\times 5^1\times {\mathrm{443}}^1\times {\mathrm{1097}}^1$

素因数の和:1551

約数の個数: 32

約数和(自身を含む): 43876080

約数和(自身を除く): 24437240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 443, 886, 1097, 1772, 2194, 2215, 3544, 4388, 4430, 5485, 8776, 8860, 10970, 17720, 21940, 43880, 485971, 971942, 1943884, 2429855, 3887768, 4859710, 9719420, 19438840]

約数ペア:

[(1, 19438840), (2, 9719420), (4, 4859710), (5, 3887768), (8, 2429855), (10, 1943884), (20, 971942), (40, 485971), (443, 43880), (886, 21940), (1097, 17720), (1772, 10970), (2194, 8860), (2215, 8776), (3544, 5485), (4388, 4430)]