20872328

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{167}}^1\times {\mathrm{919}}^1$

素因数の和:1109

約数の個数: 32

約数和(自身を含む): 41731200

約数和(自身を除く): 20858872

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 167, 334, 668, 919, 1336, 1838, 2839, 3676, 5678, 7352, 11356, 15623, 22712, 31246, 62492, 124984, 153473, 306946, 613892, 1227784, 2609041, 5218082, 10436164, 20872328]

約数ペア:

[(1, 20872328), (2, 10436164), (4, 5218082), (8, 2609041), (17, 1227784), (34, 613892), (68, 306946), (136, 153473), (167, 124984), (334, 62492), (668, 31246), (919, 22712), (1336, 15623), (1838, 11356), (2839, 7352), (3676, 5678)]