505520

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:173

約数の個数: 40

約数和(自身を含む): 1205280

約数和(自身を除く): 699760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 89, 142, 178, 284, 355, 356, 445, 568, 710, 712, 890, 1136, 1420, 1424, 1780, 2840, 3560, 5680, 6319, 7120, 12638, 25276, 31595, 50552, 63190, 101104, 126380, 252760, 505520]

約数ペア:

[(1, 505520), (2, 252760), (4, 126380), (5, 101104), (8, 63190), (10, 50552), (16, 31595), (20, 25276), (40, 12638), (71, 7120), (80, 6319), (89, 5680), (142, 3560), (178, 2840), (284, 1780), (355, 1424), (356, 1420), (445, 1136), (568, 890), (710, 712)]