20289015

素因数分解:

$3^3\times 5^1\times {\mathrm{137}}^1\times {\mathrm{1097}}^1$

素因数の和:1248

約数の個数: 32

約数和(自身を含む): 36365760

約数和(自身を除く): 16076745

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 137, 411, 685, 1097, 1233, 2055, 3291, 3699, 5485, 6165, 9873, 16455, 18495, 29619, 49365, 148095, 150289, 450867, 751445, 1352601, 2254335, 4057803, 6763005, 20289015]

約数ペア:

[(1, 20289015), (3, 6763005), (5, 4057803), (9, 2254335), (15, 1352601), (27, 751445), (45, 450867), (135, 150289), (137, 148095), (411, 49365), (685, 29619), (1097, 18495), (1233, 16455), (2055, 9873), (3291, 6165), (3699, 5485)]