20498704

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{1051}}^1$

素因数の和:1135

約数の個数: 40

約数和(自身を含む): 42265152

約数和(自身を除く): 21766448

約数列:

[1, 2, 4, 8, 16, 23, 46, 53, 92, 106, 184, 212, 368, 424, 848, 1051, 1219, 2102, 2438, 4204, 4876, 8408, 9752, 16816, 19504, 24173, 48346, 55703, 96692, 111406, 193384, 222812, 386768, 445624, 891248, 1281169, 2562338, 5124676, 10249352, 20498704]

約数ペア:

[(1, 20498704), (2, 10249352), (4, 5124676), (8, 2562338), (16, 1281169), (23, 891248), (46, 445624), (53, 386768), (92, 222812), (106, 193384), (184, 111406), (212, 96692), (368, 55703), (424, 48346), (848, 24173), (1051, 19504), (1219, 16816), (2102, 9752), (2438, 8408), (4204, 4876)]