31809999

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{317}}^1$

素因数の和:447

約数の個数: 32

約数和(自身を含む): 47867904

約数和(自身を除く): 16057905

約数列:

[1, 3, 13, 31, 39, 83, 93, 249, 317, 403, 951, 1079, 1209, 2573, 3237, 4121, 7719, 9827, 12363, 26311, 29481, 33449, 78933, 100347, 127751, 342043, 383253, 815641, 1026129, 2446923, 10603333, 31809999]

約数ペア:

[(1, 31809999), (3, 10603333), (13, 2446923), (31, 1026129), (39, 815641), (83, 383253), (93, 342043), (249, 127751), (317, 100347), (403, 78933), (951, 33449), (1079, 29481), (1209, 26311), (2573, 12363), (3237, 9827), (4121, 7719)]