21139898

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{23}}^2\times {\mathrm{29}}^1\times {\mathrm{53}}^1$

素因数の和:143

約数の個数: 48

約数和(自身を含む): 37626120

約数和(自身を除く): 16486222

約数列:

[1, 2, 13, 23, 26, 29, 46, 53, 58, 106, 299, 377, 529, 598, 667, 689, 754, 1058, 1219, 1334, 1378, 1537, 2438, 3074, 6877, 8671, 13754, 15341, 15847, 17342, 19981, 28037, 30682, 31694, 35351, 39962, 56074, 70702, 199433, 364481, 398866, 459563, 728962, 813073, 919126, 1626146, 10569949, 21139898]

約数ペア:

[(1, 21139898), (2, 10569949), (13, 1626146), (23, 919126), (26, 813073), (29, 728962), (46, 459563), (53, 398866), (58, 364481), (106, 199433), (299, 70702), (377, 56074), (529, 39962), (598, 35351), (667, 31694), (689, 30682), (754, 28037), (1058, 19981), (1219, 17342), (1334, 15847), (1378, 15341), (1537, 13754), (2438, 8671), (3074, 6877)]