20178045

素因数分解:

$3^3\times 5^1\times {\mathrm{137}}^1\times {\mathrm{1091}}^1$

素因数の和:1242

約数の個数: 32

約数和(自身を含む): 36167040

約数和(自身を除く): 15988995

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 137, 411, 685, 1091, 1233, 2055, 3273, 3699, 5455, 6165, 9819, 16365, 18495, 29457, 49095, 147285, 149467, 448401, 747335, 1345203, 2242005, 4035609, 6726015, 20178045]

約数ペア:

[(1, 20178045), (3, 6726015), (5, 4035609), (9, 2242005), (15, 1345203), (27, 747335), (45, 448401), (135, 149467), (137, 147285), (411, 49095), (685, 29457), (1091, 18495), (1233, 16365), (2055, 9819), (3273, 6165), (3699, 5455)]