20204912

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{13877}}^1$

素因数の和:13905

約数の個数: 40

約数和(自身を含む): 48184416

約数和(自身を除く): 27979504

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 208, 364, 728, 1456, 13877, 27754, 55508, 97139, 111016, 180401, 194278, 222032, 360802, 388556, 721604, 777112, 1262807, 1443208, 1554224, 2525614, 2886416, 5051228, 10102456, 20204912]

約数ペア:

[(1, 20204912), (2, 10102456), (4, 5051228), (7, 2886416), (8, 2525614), (13, 1554224), (14, 1443208), (16, 1262807), (26, 777112), (28, 721604), (52, 388556), (56, 360802), (91, 222032), (104, 194278), (112, 180401), (182, 111016), (208, 97139), (364, 55508), (728, 27754), (1456, 13877)]