21855681

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{5557}}^1$

素因数の和:5605

約数の個数: 24

約数和(自身を含む): 34681920

約数和(自身を除く): 12826239

約数列:

[1, 3, 9, 19, 23, 57, 69, 171, 207, 437, 1311, 3933, 5557, 16671, 50013, 105583, 127811, 316749, 383433, 950247, 1150299, 2428409, 7285227, 21855681]

約数ペア:

[(1, 21855681), (3, 7285227), (9, 2428409), (19, 1150299), (23, 950247), (57, 383433), (69, 316749), (171, 127811), (207, 105583), (437, 50013), (1311, 16671), (3933, 5557)]