64796140

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{29723}}^1$

素因数の和:29841

約数の個数: 24

約数和(自身を含む): 137324880

約数和(自身を除く): 72528740

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 29723, 59446, 118892, 148615, 297230, 594460, 3239807, 6479614, 12959228, 16199035, 32398070, 64796140]

約数ペア:

[(1, 64796140), (2, 32398070), (4, 16199035), (5, 12959228), (10, 6479614), (20, 3239807), (109, 594460), (218, 297230), (436, 148615), (545, 118892), (1090, 59446), (2180, 29723)]