21399477

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{379}}^1$

素因数の和:481

約数の個数: 32

約数和(自身を含む): 32832000

約数和(自身を除く): 11432523

約数列:

[1, 3, 11, 29, 33, 59, 87, 177, 319, 379, 649, 957, 1137, 1711, 1947, 4169, 5133, 10991, 12507, 18821, 22361, 32973, 56463, 67083, 120901, 245971, 362703, 648469, 737913, 1945407, 7133159, 21399477]

約数ペア:

[(1, 21399477), (3, 7133159), (11, 1945407), (29, 737913), (33, 648469), (59, 362703), (87, 245971), (177, 120901), (319, 67083), (379, 56463), (649, 32973), (957, 22361), (1137, 18821), (1711, 12507), (1947, 10991), (4169, 5133)]