20747168

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{941}}^1$

素因数の和:1017

約数の個数: 48

約数和(自身を含む): 44865576

約数和(自身を除く): 24118408

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 53, 104, 106, 208, 212, 416, 424, 689, 848, 941, 1378, 1696, 1882, 2756, 3764, 5512, 7528, 11024, 12233, 15056, 22048, 24466, 30112, 48932, 49873, 97864, 99746, 195728, 199492, 391456, 398984, 648349, 797968, 1296698, 1595936, 2593396, 5186792, 10373584, 20747168]

約数ペア:

[(1, 20747168), (2, 10373584), (4, 5186792), (8, 2593396), (13, 1595936), (16, 1296698), (26, 797968), (32, 648349), (52, 398984), (53, 391456), (104, 199492), (106, 195728), (208, 99746), (212, 97864), (416, 49873), (424, 48932), (689, 30112), (848, 24466), (941, 22048), (1378, 15056), (1696, 12233), (1882, 11024), (2756, 7528), (3764, 5512)]