218421860

素因数分解:

$2^2\times 5^1\times {\mathrm{2477}}^1\times {\mathrm{4409}}^1$

素因数の和:6895

約数の個数: 24

約数和(自身を含む): 458975160

約数和(自身を除く): 240553300

約数列:

[1, 2, 4, 5, 10, 20, 2477, 4409, 4954, 8818, 9908, 12385, 17636, 22045, 24770, 44090, 49540, 88180, 10921093, 21842186, 43684372, 54605465, 109210930, 218421860]

約数ペア:

[(1, 218421860), (2, 109210930), (4, 54605465), (5, 43684372), (10, 21842186), (20, 10921093), (2477, 88180), (4409, 49540), (4954, 44090), (8818, 24770), (9908, 22045), (12385, 17636)]