20812560

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{86719}}^1$

素因数の和:86735

約数の個数: 40

約数和(自身を含む): 64519680

約数和(自身を除く): 43707120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 86719, 173438, 260157, 346876, 433595, 520314, 693752, 867190, 1040628, 1300785, 1387504, 1734380, 2081256, 2601570, 3468760, 4162512, 5203140, 6937520, 10406280, 20812560]

約数ペア:

[(1, 20812560), (2, 10406280), (3, 6937520), (4, 5203140), (5, 4162512), (6, 3468760), (8, 2601570), (10, 2081256), (12, 1734380), (15, 1387504), (16, 1300785), (20, 1040628), (24, 867190), (30, 693752), (40, 520314), (48, 433595), (60, 346876), (80, 260157), (120, 173438), (240, 86719)]