20502009

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{5051}}^1$

素因数の和:5109

約数の個数: 24

約数和(自身を含む): 33100704

約数和(自身を除く): 12598695

約数列:

[1, 3, 9, 11, 33, 41, 99, 123, 369, 451, 1353, 4059, 5051, 15153, 45459, 55561, 166683, 207091, 500049, 621273, 1863819, 2278001, 6834003, 20502009]

約数ペア:

[(1, 20502009), (3, 6834003), (9, 2278001), (11, 1863819), (33, 621273), (41, 500049), (99, 207091), (123, 166683), (369, 55561), (451, 45459), (1353, 15153), (4059, 5051)]