28645911

素因数分解:

$3^2\times 7^1\times {\mathrm{223}}^1\times {\mathrm{2039}}^1$

素因数の和:2275

約数の個数: 24

約数和(自身を含む): 47523840

約数和(自身を除く): 18877929

約数列:

[1, 3, 7, 9, 21, 63, 223, 669, 1561, 2007, 2039, 4683, 6117, 14049, 14273, 18351, 42819, 128457, 454697, 1364091, 3182879, 4092273, 9548637, 28645911]

約数ペア:

[(1, 28645911), (3, 9548637), (7, 4092273), (9, 3182879), (21, 1364091), (63, 454697), (223, 128457), (669, 42819), (1561, 18351), (2007, 14273), (2039, 14049), (4683, 6117)]