64871480

素因数分解:

$2^3\times 5^1\times {\mathrm{839}}^1\times {\mathrm{1933}}^1$

素因数の和:2783

約数の個数: 32

約数和(自身を含む): 146210400

約数和(自身を除く): 81338920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 839, 1678, 1933, 3356, 3866, 4195, 6712, 7732, 8390, 9665, 15464, 16780, 19330, 33560, 38660, 77320, 1621787, 3243574, 6487148, 8108935, 12974296, 16217870, 32435740, 64871480]

約数ペア:

[(1, 64871480), (2, 32435740), (4, 16217870), (5, 12974296), (8, 8108935), (10, 6487148), (20, 3243574), (40, 1621787), (839, 77320), (1678, 38660), (1933, 33560), (3356, 19330), (3866, 16780), (4195, 15464), (6712, 9665), (7732, 8390)]