1640982609

素因数分解:

$3^2\times 7^2\times {\mathrm{3721049}}^1$

素因数の和:3721069

約数の個数: 18

約数和(自身を含む): 2757298050

約数和(自身を除く): 1116315441

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 3721049, 11163147, 26047343, 33489441, 78142029, 182331401, 234426087, 546994203, 1640982609]

約数ペア:

[(1, 1640982609), (3, 546994203), (7, 234426087), (9, 182331401), (21, 78142029), (49, 33489441), (63, 26047343), (147, 11163147), (441, 3721049)]