21495815

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{13477}}^1$

素因数の和:13522

約数の個数: 16

約数和(自身を含む): 29112480

約数和(自身を除く): 7616665

約数列:

[1, 5, 11, 29, 55, 145, 319, 1595, 13477, 67385, 148247, 390833, 741235, 1954165, 4299163, 21495815]

約数ペア:

[(1, 21495815), (5, 4299163), (11, 1954165), (29, 741235), (55, 390833), (145, 148247), (319, 67385), (1595, 13477)]