21216440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{75773}}^1$

素因数の和:75791

約数の個数: 32

約数和(自身を含む): 54557280

約数和(自身を除く): 33340840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 75773, 151546, 303092, 378865, 530411, 606184, 757730, 1060822, 1515460, 2121644, 2652055, 3030920, 4243288, 5304110, 10608220, 21216440]

約数ペア:

[(1, 21216440), (2, 10608220), (4, 5304110), (5, 4243288), (7, 3030920), (8, 2652055), (10, 2121644), (14, 1515460), (20, 1060822), (28, 757730), (35, 606184), (40, 530411), (56, 378865), (70, 303092), (140, 151546), (280, 75773)]