20996536

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{397}}^1\times {\mathrm{601}}^1$

素因数の和:1015

約数の個数: 32

約数和(自身を含む): 43127280

約数和(自身を除く): 22130744

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 397, 601, 794, 1202, 1588, 2404, 3176, 4367, 4808, 6611, 8734, 13222, 17468, 26444, 34936, 52888, 238597, 477194, 954388, 1908776, 2624567, 5249134, 10498268, 20996536]

約数ペア:

[(1, 20996536), (2, 10498268), (4, 5249134), (8, 2624567), (11, 1908776), (22, 954388), (44, 477194), (88, 238597), (397, 52888), (601, 34936), (794, 26444), (1202, 17468), (1588, 13222), (2404, 8734), (3176, 6611), (4367, 4808)]