20987799

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{2287}}^1$

素因数の和:2339

約数の個数: 32

約数和(自身を含む): 35143680

約数和(自身を除く): 14155881

約数列:

[1, 3, 7, 19, 21, 23, 57, 69, 133, 161, 399, 437, 483, 1311, 2287, 3059, 6861, 9177, 16009, 43453, 48027, 52601, 130359, 157803, 304171, 368207, 912513, 999419, 1104621, 2998257, 6995933, 20987799]

約数ペア:

[(1, 20987799), (3, 6995933), (7, 2998257), (19, 1104621), (21, 999419), (23, 912513), (57, 368207), (69, 304171), (133, 157803), (161, 130359), (399, 52601), (437, 48027), (483, 43453), (1311, 16009), (2287, 9177), (3059, 6861)]