21563680

素因数分解:

$2^5\times 5^1\times {\mathrm{307}}^1\times {\mathrm{439}}^1$

素因数の和:761

約数の個数: 48

約数和(自身を含む): 51226560

約数和(自身を除く): 29662880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 307, 439, 614, 878, 1228, 1535, 1756, 2195, 2456, 3070, 3512, 4390, 4912, 6140, 7024, 8780, 9824, 12280, 14048, 17560, 24560, 35120, 49120, 70240, 134773, 269546, 539092, 673865, 1078184, 1347730, 2156368, 2695460, 4312736, 5390920, 10781840, 21563680]

約数ペア:

[(1, 21563680), (2, 10781840), (4, 5390920), (5, 4312736), (8, 2695460), (10, 2156368), (16, 1347730), (20, 1078184), (32, 673865), (40, 539092), (80, 269546), (160, 134773), (307, 70240), (439, 49120), (614, 35120), (878, 24560), (1228, 17560), (1535, 14048), (1756, 12280), (2195, 9824), (2456, 8780), (3070, 7024), (3512, 6140), (4390, 4912)]