1780940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{12721}}^1$

素因数の和:12737

約数の個数: 24

約数和(自身を含む): 4274592

約数和(自身を除く): 2493652

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 12721, 25442, 50884, 63605, 89047, 127210, 178094, 254420, 356188, 445235, 890470, 1780940]

約数ペア:

[(1, 1780940), (2, 890470), (4, 445235), (5, 356188), (7, 254420), (10, 178094), (14, 127210), (20, 89047), (28, 63605), (35, 50884), (70, 25442), (140, 12721)]