21331635

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{787}}^1$

素因数の和:947

約数の個数: 32

約数和(自身を含む): 37067520

約数和(自身を除く): 15735885

約数列:

[1, 3, 5, 13, 15, 39, 65, 139, 195, 417, 695, 787, 1807, 2085, 2361, 3935, 5421, 9035, 10231, 11805, 27105, 30693, 51155, 109393, 153465, 328179, 546965, 1422109, 1640895, 4266327, 7110545, 21331635]

約数ペア:

[(1, 21331635), (3, 7110545), (5, 4266327), (13, 1640895), (15, 1422109), (39, 546965), (65, 328179), (139, 153465), (195, 109393), (417, 51155), (695, 30693), (787, 27105), (1807, 11805), (2085, 10231), (2361, 9035), (3935, 5421)]