21185038

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{1091}}^1$

素因数の和:1192

約数の個数: 32

約数和(自身を含む): 38787840

約数和(自身を除く): 17602802

約数列:

[1, 2, 7, 14, 19, 38, 73, 133, 146, 266, 511, 1022, 1091, 1387, 2182, 2774, 7637, 9709, 15274, 19418, 20729, 41458, 79643, 145103, 159286, 290206, 557501, 1115002, 1513217, 3026434, 10592519, 21185038]

約数ペア:

[(1, 21185038), (2, 10592519), (7, 3026434), (14, 1513217), (19, 1115002), (38, 557501), (73, 290206), (133, 159286), (146, 145103), (266, 79643), (511, 41458), (1022, 20729), (1091, 19418), (1387, 15274), (2182, 9709), (2774, 7637)]