15997020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{20509}}^1$

素因数の和:20534

約数の個数: 48

約数和(自身を含む): 48239520

約数和(自身を除く): 32242500

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 20509, 41018, 61527, 82036, 102545, 123054, 205090, 246108, 266617, 307635, 410180, 533234, 615270, 799851, 1066468, 1230540, 1333085, 1599702, 2666170, 3199404, 3999255, 5332340, 7998510, 15997020]

約数ペア:

[(1, 15997020), (2, 7998510), (3, 5332340), (4, 3999255), (5, 3199404), (6, 2666170), (10, 1599702), (12, 1333085), (13, 1230540), (15, 1066468), (20, 799851), (26, 615270), (30, 533234), (39, 410180), (52, 307635), (60, 266617), (65, 246108), (78, 205090), (130, 123054), (156, 102545), (195, 82036), (260, 61527), (390, 41018), (780, 20509)]