21329605

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{4909}}^1$

素因数の和:5004

約数の個数: 16

約数和(自身を含む): 28281600

約数和(自身を除く): 6951995

約数列:

[1, 5, 11, 55, 79, 395, 869, 4345, 4909, 24545, 53999, 269995, 387811, 1939055, 4265921, 21329605]

約数ペア:

[(1, 21329605), (5, 4265921), (11, 1939055), (55, 387811), (79, 269995), (395, 53999), (869, 24545), (4345, 4909)]