20553645

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{3209}}^1$

素因数の和:3285

約数の個数: 32

約数和(自身を含む): 38211840

約数和(自身を除く): 17658195

約数列:

[1, 3, 5, 7, 15, 21, 35, 61, 105, 183, 305, 427, 915, 1281, 2135, 3209, 6405, 9627, 16045, 22463, 48135, 67389, 112315, 195749, 336945, 587247, 978745, 1370243, 2936235, 4110729, 6851215, 20553645]

約数ペア:

[(1, 20553645), (3, 6851215), (5, 4110729), (7, 2936235), (15, 1370243), (21, 978745), (35, 587247), (61, 336945), (105, 195749), (183, 112315), (305, 67389), (427, 48135), (915, 22463), (1281, 16045), (2135, 9627), (3209, 6405)]