19398940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{88177}}^1$

素因数の和:88197

約数の個数: 24

約数和(自身を含む): 44441712

約数和(自身を除く): 25042772

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 88177, 176354, 352708, 440885, 881770, 969947, 1763540, 1939894, 3879788, 4849735, 9699470, 19398940]

約数ペア:

[(1, 19398940), (2, 9699470), (4, 4849735), (5, 3879788), (10, 1939894), (11, 1763540), (20, 969947), (22, 881770), (44, 440885), (55, 352708), (110, 176354), (220, 88177)]