15210909

素因数分解:

$3^4\times 7^1\times {\mathrm{139}}^1\times {\mathrm{193}}^1$

素因数の和:351

約数の個数: 40

約数和(自身を含む): 26290880

約数和(自身を除く): 11079971

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 139, 189, 193, 417, 567, 579, 973, 1251, 1351, 1737, 2919, 3753, 4053, 5211, 8757, 11259, 12159, 15633, 26271, 26827, 36477, 78813, 80481, 109431, 187789, 241443, 563367, 724329, 1690101, 2172987, 5070303, 15210909]

約数ペア:

[(1, 15210909), (3, 5070303), (7, 2172987), (9, 1690101), (21, 724329), (27, 563367), (63, 241443), (81, 187789), (139, 109431), (189, 80481), (193, 78813), (417, 36477), (567, 26827), (579, 26271), (973, 15633), (1251, 12159), (1351, 11259), (1737, 8757), (2919, 5211), (3753, 4053)]