21495903

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{563}}^1$

素因数の和:679

約数の個数: 32

約数和(自身を含む): 34110720

約数和(自身を除く): 12614817

約数列:

[1, 3, 11, 13, 33, 39, 89, 143, 267, 429, 563, 979, 1157, 1689, 2937, 3471, 6193, 7319, 12727, 18579, 21957, 38181, 50107, 80509, 150321, 241527, 551177, 651391, 1653531, 1954173, 7165301, 21495903]

約数ペア:

[(1, 21495903), (3, 7165301), (11, 1954173), (13, 1653531), (33, 651391), (39, 551177), (89, 241527), (143, 150321), (267, 80509), (429, 50107), (563, 38181), (979, 21957), (1157, 18579), (1689, 12727), (2937, 7319), (3471, 6193)]