20874320

素因数分解:

$2^4\times 5^1\times {\mathrm{311}}^1\times {\mathrm{839}}^1$

素因数の和:1163

約数の個数: 40

約数和(自身を含む): 48746880

約数和(自身を除く): 27872560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 311, 622, 839, 1244, 1555, 1678, 2488, 3110, 3356, 4195, 4976, 6220, 6712, 8390, 12440, 13424, 16780, 24880, 33560, 67120, 260929, 521858, 1043716, 1304645, 2087432, 2609290, 4174864, 5218580, 10437160, 20874320]

約数ペア:

[(1, 20874320), (2, 10437160), (4, 5218580), (5, 4174864), (8, 2609290), (10, 2087432), (16, 1304645), (20, 1043716), (40, 521858), (80, 260929), (311, 67120), (622, 33560), (839, 24880), (1244, 16780), (1555, 13424), (1678, 12440), (2488, 8390), (3110, 6712), (3356, 6220), (4195, 4976)]