18381531

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{2003}}^1$

素因数の和:2055

約数の個数: 32

約数和(自身を含む): 30781440

約数和(自身を除く): 12399909

約数列:

[1, 3, 7, 19, 21, 23, 57, 69, 133, 161, 399, 437, 483, 1311, 2003, 3059, 6009, 9177, 14021, 38057, 42063, 46069, 114171, 138207, 266399, 322483, 799197, 875311, 967449, 2625933, 6127177, 18381531]

約数ペア:

[(1, 18381531), (3, 6127177), (7, 2625933), (19, 967449), (21, 875311), (23, 799197), (57, 322483), (69, 266399), (133, 138207), (161, 114171), (399, 46069), (437, 42063), (483, 38057), (1311, 14021), (2003, 9177), (3059, 6009)]