19913180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{142237}}^1$

素因数の和:142253

約数の個数: 24

約数和(自身を含む): 47791968

約数和(自身を除く): 27878788

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 142237, 284474, 568948, 711185, 995659, 1422370, 1991318, 2844740, 3982636, 4978295, 9956590, 19913180]

約数ペア:

[(1, 19913180), (2, 9956590), (4, 4978295), (5, 3982636), (7, 2844740), (10, 1991318), (14, 1422370), (20, 995659), (28, 711185), (35, 568948), (70, 284474), (140, 142237)]