21387065

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{1109}}^1$

素因数の和:1169

約数の個数: 32

約数和(自身を含む): 31968000

約数和(自身を除く): 10580935

約数列:

[1, 5, 7, 19, 29, 35, 95, 133, 145, 203, 551, 665, 1015, 1109, 2755, 3857, 5545, 7763, 19285, 21071, 32161, 38815, 105355, 147497, 160805, 225127, 611059, 737485, 1125635, 3055295, 4277413, 21387065]

約数ペア:

[(1, 21387065), (5, 4277413), (7, 3055295), (19, 1125635), (29, 737485), (35, 611059), (95, 225127), (133, 160805), (145, 147497), (203, 105355), (551, 38815), (665, 32161), (1015, 21071), (1109, 19285), (2755, 7763), (3857, 5545)]