219214940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1565821}}^1$

素因数の和:1565837

約数の個数: 24

約数和(自身を含む): 526116192

約数和(自身を除く): 306901252

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1565821, 3131642, 6263284, 7829105, 10960747, 15658210, 21921494, 31316420, 43842988, 54803735, 109607470, 219214940]

約数ペア:

[(1, 219214940), (2, 109607470), (4, 54803735), (5, 43842988), (7, 31316420), (10, 21921494), (14, 15658210), (20, 10960747), (28, 7829105), (35, 6263284), (70, 3131642), (140, 1565821)]