19968598

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{337}}^1$

素因数の和:448

約数の個数: 32

約数和(自身を含む): 33729696

約数和(自身を除く): 13761098

約数列:

[1, 2, 13, 26, 43, 53, 86, 106, 337, 559, 674, 689, 1118, 1378, 2279, 4381, 4558, 8762, 14491, 17861, 28982, 29627, 35722, 59254, 188383, 232193, 376766, 464386, 768023, 1536046, 9984299, 19968598]

約数ペア:

[(1, 19968598), (2, 9984299), (13, 1536046), (26, 768023), (43, 464386), (53, 376766), (86, 232193), (106, 188383), (337, 59254), (559, 35722), (674, 29627), (689, 28982), (1118, 17861), (1378, 14491), (2279, 8762), (4381, 4558)]