16396821

素因数分解:

$3^2\times 7^2\times {\mathrm{37181}}^1$

素因数の和:37201

約数の個数: 18

約数和(自身を含む): 27551862

約数和(自身を除く): 11155041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 37181, 111543, 260267, 334629, 780801, 1821869, 2342403, 5465607, 16396821]

約数ペア:

[(1, 16396821), (3, 5465607), (7, 2342403), (9, 1821869), (21, 780801), (49, 334629), (63, 260267), (147, 111543), (441, 37181)]