20213128

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{263}}^1\times {\mathrm{739}}^1$

素因数の和:1021

約数の個数: 32

約数和(自身を含む): 41025600

約数和(自身を除く): 20812472

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 263, 526, 739, 1052, 1478, 2104, 2956, 3419, 5912, 6838, 9607, 13676, 19214, 27352, 38428, 76856, 194357, 388714, 777428, 1554856, 2526641, 5053282, 10106564, 20213128]

約数ペア:

[(1, 20213128), (2, 10106564), (4, 5053282), (8, 2526641), (13, 1554856), (26, 777428), (52, 388714), (104, 194357), (263, 76856), (526, 38428), (739, 27352), (1052, 19214), (1478, 13676), (2104, 9607), (2956, 6838), (3419, 5912)]