20651240

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{22447}}^1$

素因数の和:22481

約数の個数: 32

約数和(自身を含む): 48487680

約数和(自身を除く): 27836440

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 920, 22447, 44894, 89788, 112235, 179576, 224470, 448940, 516281, 897880, 1032562, 2065124, 2581405, 4130248, 5162810, 10325620, 20651240]

約数ペア:

[(1, 20651240), (2, 10325620), (4, 5162810), (5, 4130248), (8, 2581405), (10, 2065124), (20, 1032562), (23, 897880), (40, 516281), (46, 448940), (92, 224470), (115, 179576), (184, 112235), (230, 89788), (460, 44894), (920, 22447)]