21751905

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{9007}}^1$

素因数の和:9045

約数の個数: 32

約数和(自身を含む): 41508864

約数和(自身を除く): 19756959

約数列:

[1, 3, 5, 7, 15, 21, 23, 35, 69, 105, 115, 161, 345, 483, 805, 2415, 9007, 27021, 45035, 63049, 135105, 189147, 207161, 315245, 621483, 945735, 1035805, 1450127, 3107415, 4350381, 7250635, 21751905]

約数ペア:

[(1, 21751905), (3, 7250635), (5, 4350381), (7, 3107415), (15, 1450127), (21, 1035805), (23, 945735), (35, 621483), (69, 315245), (105, 207161), (115, 189147), (161, 135105), (345, 63049), (483, 45035), (805, 27021), (2415, 9007)]