19782992

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{569}}^1$

素因数の和:671

約数の個数: 40

約数和(自身を含む): 40075560

約数和(自身を除く): 20292568

約数列:

[1, 2, 4, 8, 16, 41, 53, 82, 106, 164, 212, 328, 424, 569, 656, 848, 1138, 2173, 2276, 4346, 4552, 8692, 9104, 17384, 23329, 30157, 34768, 46658, 60314, 93316, 120628, 186632, 241256, 373264, 482512, 1236437, 2472874, 4945748, 9891496, 19782992]

約数ペア:

[(1, 19782992), (2, 9891496), (4, 4945748), (8, 2472874), (16, 1236437), (41, 482512), (53, 373264), (82, 241256), (106, 186632), (164, 120628), (212, 93316), (328, 60314), (424, 46658), (569, 34768), (656, 30157), (848, 23329), (1138, 17384), (2173, 9104), (2276, 8692), (4346, 4552)]