21597268

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{70121}}^1$

素因数の和:70143

約数の個数: 24

約数和(自身を含む): 47121984

約数和(自身を除く): 25524716

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 308, 70121, 140242, 280484, 490847, 771331, 981694, 1542662, 1963388, 3085324, 5399317, 10798634, 21597268]

約数ペア:

[(1, 21597268), (2, 10798634), (4, 5399317), (7, 3085324), (11, 1963388), (14, 1542662), (22, 981694), (28, 771331), (44, 490847), (77, 280484), (154, 140242), (308, 70121)]