21129558

素因数分解:

$2^1\times 3^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{2539}}^1$

素因数の和:2636

約数の個数: 32

約数和(自身を含む): 45110400

約数和(自身を除く): 23980842

約数列:

[1, 2, 3, 6, 19, 38, 57, 73, 114, 146, 219, 438, 1387, 2539, 2774, 4161, 5078, 7617, 8322, 15234, 48241, 96482, 144723, 185347, 289446, 370694, 556041, 1112082, 3521593, 7043186, 10564779, 21129558]

約数ペア:

[(1, 21129558), (2, 10564779), (3, 7043186), (6, 3521593), (19, 1112082), (38, 556041), (57, 370694), (73, 289446), (114, 185347), (146, 144723), (219, 96482), (438, 48241), (1387, 15234), (2539, 8322), (2774, 7617), (4161, 5078)]