21284769

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{409}}^1$

素因数の和:525

約数の個数: 32

約数和(自身を含む): 33062400

約数和(自身を除く): 11777631

約数列:

[1, 3, 11, 19, 33, 57, 83, 209, 249, 409, 627, 913, 1227, 1577, 2739, 4499, 4731, 7771, 13497, 17347, 23313, 33947, 52041, 85481, 101841, 256443, 373417, 644993, 1120251, 1934979, 7094923, 21284769]

約数ペア:

[(1, 21284769), (3, 7094923), (11, 1934979), (19, 1120251), (33, 644993), (57, 373417), (83, 256443), (209, 101841), (249, 85481), (409, 52041), (627, 33947), (913, 23313), (1227, 17347), (1577, 13497), (2739, 7771), (4499, 4731)]