21036813

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{461}}^1$

素因数の和:565

約数の個数: 32

約数和(自身を含む): 33530112

約数和(自身を除く): 12493299

約数列:

[1, 3, 7, 21, 41, 53, 123, 159, 287, 371, 461, 861, 1113, 1383, 2173, 3227, 6519, 9681, 15211, 18901, 24433, 45633, 56703, 73299, 132307, 171031, 396921, 513093, 1001753, 3005259, 7012271, 21036813]

約数ペア:

[(1, 21036813), (3, 7012271), (7, 3005259), (21, 1001753), (41, 513093), (53, 396921), (123, 171031), (159, 132307), (287, 73299), (371, 56703), (461, 45633), (861, 24433), (1113, 18901), (1383, 15211), (2173, 9681), (3227, 6519)]