20854281

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{457}}^1$

素因数の和:561

約数の個数: 32

約数和(自身を含む): 33239808

約数和(自身を除く): 12385527

約数列:

[1, 3, 7, 21, 41, 53, 123, 159, 287, 371, 457, 861, 1113, 1371, 2173, 3199, 6519, 9597, 15211, 18737, 24221, 45633, 56211, 72663, 131159, 169547, 393477, 508641, 993061, 2979183, 6951427, 20854281]

約数ペア:

[(1, 20854281), (3, 6951427), (7, 2979183), (21, 993061), (41, 508641), (53, 393477), (123, 169547), (159, 131159), (287, 72663), (371, 56211), (457, 45633), (861, 24221), (1113, 18737), (1371, 15211), (2173, 9597), (3199, 6519)]