20571444

素因数分解:

$2^2\times 3^2\times {\mathrm{139}}^1\times {\mathrm{4111}}^1$

素因数の和:4260

約数の個数: 36

約数和(自身を含む): 52386880

約数和(自身を除く): 31815436

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 139, 278, 417, 556, 834, 1251, 1668, 2502, 4111, 5004, 8222, 12333, 16444, 24666, 36999, 49332, 73998, 147996, 571429, 1142858, 1714287, 2285716, 3428574, 5142861, 6857148, 10285722, 20571444]

約数ペア:

[(1, 20571444), (2, 10285722), (3, 6857148), (4, 5142861), (6, 3428574), (9, 2285716), (12, 1714287), (18, 1142858), (36, 571429), (139, 147996), (278, 73998), (417, 49332), (556, 36999), (834, 24666), (1251, 16444), (1668, 12333), (2502, 8222), (4111, 5004)]