20043855

素因数分解:

$3^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1$

素因数の和:89

約数の個数: 72

約数和(自身を含む): 39678912

約数和(自身を除く): 19635057

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 47, 65, 81, 117, 135, 141, 195, 235, 243, 351, 405, 423, 585, 611, 705, 729, 1053, 1215, 1269, 1755, 1833, 2115, 2187, 3055, 3159, 3645, 3807, 5265, 5499, 6345, 6561, 9165, 9477, 10935, 11421, 15795, 16497, 19035, 27495, 28431, 32805, 34263, 47385, 49491, 57105, 82485, 85293, 102789, 142155, 148473, 171315, 247455, 308367, 426465, 445419, 513945, 742365, 1336257, 1541835, 2227095, 4008771, 6681285, 20043855]

約数ペア:

[(1, 20043855), (3, 6681285), (5, 4008771), (9, 2227095), (13, 1541835), (15, 1336257), (27, 742365), (39, 513945), (45, 445419), (47, 426465), (65, 308367), (81, 247455), (117, 171315), (135, 148473), (141, 142155), (195, 102789), (235, 85293), (243, 82485), (351, 57105), (405, 49491), (423, 47385), (585, 34263), (611, 32805), (705, 28431), (729, 27495), (1053, 19035), (1215, 16497), (1269, 15795), (1755, 11421), (1833, 10935), (2115, 9477), (2187, 9165), (3055, 6561), (3159, 6345), (3645, 5499), (3807, 5265)]