21855951

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{367}}^1\times {\mathrm{509}}^1$

素因数の和:895

約数の個数: 24

約数和(自身を含む): 34157760

約数和(自身を除く): 12301809

約数列:

[1, 3, 9, 13, 39, 117, 367, 509, 1101, 1527, 3303, 4581, 4771, 6617, 14313, 19851, 42939, 59553, 186803, 560409, 1681227, 2428439, 7285317, 21855951]

約数ペア:

[(1, 21855951), (3, 7285317), (9, 2428439), (13, 1681227), (39, 560409), (117, 186803), (367, 59553), (509, 42939), (1101, 19851), (1527, 14313), (3303, 6617), (4581, 4771)]