21170810

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{1109}}^1$

素因数の和:1222

約数の個数: 32

約数和(自身を含む): 40279680

約数和(自身を除く): 19108870

約数列:

[1, 2, 5, 10, 23, 46, 83, 115, 166, 230, 415, 830, 1109, 1909, 2218, 3818, 5545, 9545, 11090, 19090, 25507, 51014, 92047, 127535, 184094, 255070, 460235, 920470, 2117081, 4234162, 10585405, 21170810]

約数ペア:

[(1, 21170810), (2, 10585405), (5, 4234162), (10, 2117081), (23, 920470), (46, 460235), (83, 255070), (115, 184094), (166, 127535), (230, 92047), (415, 51014), (830, 25507), (1109, 19090), (1909, 11090), (2218, 9545), (3818, 5545)]