640840340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{4577431}}^1$

素因数の和:4577447

約数の個数: 24

約数和(自身を含む): 1538017152

約数和(自身を除く): 897176812

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 4577431, 9154862, 18309724, 22887155, 32042017, 45774310, 64084034, 91548620, 128168068, 160210085, 320420170, 640840340]

約数ペア:

[(1, 640840340), (2, 320420170), (4, 160210085), (5, 128168068), (7, 91548620), (10, 64084034), (14, 45774310), (20, 32042017), (28, 22887155), (35, 18309724), (70, 9154862), (140, 4577431)]