20474896

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{569}}^1$

素因数の和:763

約数の個数: 40

約数和(自身を含む): 43044120

約数和(自身を除く): 22569224

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 173, 208, 346, 569, 692, 1138, 1384, 2249, 2276, 2768, 4498, 4552, 7397, 8996, 9104, 14794, 17992, 29588, 35984, 59176, 98437, 118352, 196874, 393748, 787496, 1279681, 1574992, 2559362, 5118724, 10237448, 20474896]

約数ペア:

[(1, 20474896), (2, 10237448), (4, 5118724), (8, 2559362), (13, 1574992), (16, 1279681), (26, 787496), (52, 393748), (104, 196874), (173, 118352), (208, 98437), (346, 59176), (569, 35984), (692, 29588), (1138, 17992), (1384, 14794), (2249, 9104), (2276, 8996), (2768, 7397), (4498, 4552)]