20572280

素因数分解:

$2^3\times 5^1\times {\mathrm{613}}^1\times {\mathrm{839}}^1$

素因数の和:1463

約数の個数: 32

約数和(自身を含む): 46418400

約数和(自身を除く): 25846120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 613, 839, 1226, 1678, 2452, 3065, 3356, 4195, 4904, 6130, 6712, 8390, 12260, 16780, 24520, 33560, 514307, 1028614, 2057228, 2571535, 4114456, 5143070, 10286140, 20572280]

約数ペア:

[(1, 20572280), (2, 10286140), (4, 5143070), (5, 4114456), (8, 2571535), (10, 2057228), (20, 1028614), (40, 514307), (613, 33560), (839, 24520), (1226, 16780), (1678, 12260), (2452, 8390), (3065, 6712), (3356, 6130), (4195, 4904)]