20780168

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{83791}}^1$

素因数の和:83828

約数の個数: 16

約数和(自身を含む): 40220160

約数和(自身を除く): 19439992

約数列:

[1, 2, 4, 8, 31, 62, 124, 248, 83791, 167582, 335164, 670328, 2597521, 5195042, 10390084, 20780168]

約数ペア:

[(1, 20780168), (2, 10390084), (4, 5195042), (8, 2597521), (31, 670328), (62, 335164), (124, 167582), (248, 83791)]