21951897

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{223}}^1$

素因数の和:413

約数の個数: 32

約数和(自身を含む): 33976320

約数和(自身を除く): 12024423

約数列:

[1, 3, 11, 19, 33, 57, 157, 209, 223, 471, 627, 669, 1727, 2453, 2983, 4237, 5181, 7359, 8949, 12711, 32813, 35011, 46607, 98439, 105033, 139821, 385121, 665209, 1155363, 1995627, 7317299, 21951897]

約数ペア:

[(1, 21951897), (3, 7317299), (11, 1995627), (19, 1155363), (33, 665209), (57, 385121), (157, 139821), (209, 105033), (223, 98439), (471, 46607), (627, 35011), (669, 32813), (1727, 12711), (2453, 8949), (2983, 7359), (4237, 5181)]