21491318

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{7159}}^1$

素因数の和:7259

約数の個数: 16

約数和(自身を含む): 34368000

約数和(自身を除く): 12876682

約数列:

[1, 2, 19, 38, 79, 158, 1501, 3002, 7159, 14318, 136021, 272042, 565561, 1131122, 10745659, 21491318]

約数ペア:

[(1, 21491318), (2, 10745659), (19, 1131122), (38, 565561), (79, 272042), (158, 136021), (1501, 14318), (3002, 7159)]