21886810

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{198971}}^1$

素因数の和:198989

約数の個数: 16

約数和(自身を含む): 42977952

約数和(自身を除く): 21091142

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 198971, 397942, 994855, 1989710, 2188681, 4377362, 10943405, 21886810]

約数ペア:

[(1, 21886810), (2, 10943405), (5, 4377362), (10, 2188681), (11, 1989710), (22, 994855), (55, 397942), (110, 198971)]