21617079

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{1499}}^1$

素因数の和:1555

約数の個数: 32

約数和(自身を含む): 34560000

約数和(自身を除く): 12942921

約数列:

[1, 3, 11, 19, 23, 33, 57, 69, 209, 253, 437, 627, 759, 1311, 1499, 4497, 4807, 14421, 16489, 28481, 34477, 49467, 85443, 103431, 313291, 379247, 655063, 939873, 1137741, 1965189, 7205693, 21617079]

約数ペア:

[(1, 21617079), (3, 7205693), (11, 1965189), (19, 1137741), (23, 939873), (33, 655063), (57, 379247), (69, 313291), (209, 103431), (253, 85443), (437, 49467), (627, 34477), (759, 28481), (1311, 16489), (1499, 14421), (4497, 4807)]