20191340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{77659}}^1$

素因数の和:77681

約数の個数: 24

約数和(自身を含む): 45664080

約数和(自身を除く): 25472740

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 77659, 155318, 310636, 388295, 776590, 1009567, 1553180, 2019134, 4038268, 5047835, 10095670, 20191340]

約数ペア:

[(1, 20191340), (2, 10095670), (4, 5047835), (5, 4038268), (10, 2019134), (13, 1553180), (20, 1009567), (26, 776590), (52, 388295), (65, 310636), (130, 155318), (260, 77659)]