19986075

素因数分解:

$3^3\times 5^2\times {\mathrm{29}}^1\times {\mathrm{1021}}^1$

素因数の和:1069

約数の個数: 48

約数和(自身を含む): 38018400

約数和(自身を除く): 18032325

約数列:

[1, 3, 5, 9, 15, 25, 27, 29, 45, 75, 87, 135, 145, 225, 261, 435, 675, 725, 783, 1021, 1305, 2175, 3063, 3915, 5105, 6525, 9189, 15315, 19575, 25525, 27567, 29609, 45945, 76575, 88827, 137835, 148045, 229725, 266481, 444135, 689175, 740225, 799443, 1332405, 2220675, 3997215, 6662025, 19986075]

約数ペア:

[(1, 19986075), (3, 6662025), (5, 3997215), (9, 2220675), (15, 1332405), (25, 799443), (27, 740225), (29, 689175), (45, 444135), (75, 266481), (87, 229725), (135, 148045), (145, 137835), (225, 88827), (261, 76575), (435, 45945), (675, 29609), (725, 27567), (783, 25525), (1021, 19575), (1305, 15315), (2175, 9189), (3063, 6525), (3915, 5105)]