21491349

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{1321}}^1$

素因数の和:1381

約数の個数: 32

約数和(自身を含む): 34266240

約数和(自身を除く): 12774891

約数列:

[1, 3, 11, 17, 29, 33, 51, 87, 187, 319, 493, 561, 957, 1321, 1479, 3963, 5423, 14531, 16269, 22457, 38309, 43593, 67371, 114927, 247027, 421399, 651253, 741081, 1264197, 1953759, 7163783, 21491349]

約数ペア:

[(1, 21491349), (3, 7163783), (11, 1953759), (17, 1264197), (29, 741081), (33, 651253), (51, 421399), (87, 247027), (187, 114927), (319, 67371), (493, 43593), (561, 38309), (957, 22457), (1321, 16269), (1479, 14531), (3963, 5423)]