16921863

素因数分解:

$3^2\times 7^1\times {\mathrm{113}}^1\times {\mathrm{2377}}^1$

素因数の和:2503

約数の個数: 24

約数和(自身を含む): 28193568

約数和(自身を除く): 11271705

約数列:

[1, 3, 7, 9, 21, 63, 113, 339, 791, 1017, 2373, 2377, 7119, 7131, 16639, 21393, 49917, 149751, 268601, 805803, 1880207, 2417409, 5640621, 16921863]

約数ペア:

[(1, 16921863), (3, 5640621), (7, 2417409), (9, 1880207), (21, 805803), (63, 268601), (113, 149751), (339, 49917), (791, 21393), (1017, 16639), (2373, 7131), (2377, 7119)]