217488560

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{87697}}^1$

素因数の和:87741

約数の個数: 40

約数和(自身を含む): 521978496

約数和(自身を除く): 304489936

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 87697, 175394, 350788, 438485, 701576, 876970, 1403152, 1753940, 2718607, 3507880, 5437214, 7015760, 10874428, 13593035, 21748856, 27186070, 43497712, 54372140, 108744280, 217488560]

約数ペア:

[(1, 217488560), (2, 108744280), (4, 54372140), (5, 43497712), (8, 27186070), (10, 21748856), (16, 13593035), (20, 10874428), (31, 7015760), (40, 5437214), (62, 3507880), (80, 2718607), (124, 1753940), (155, 1403152), (248, 876970), (310, 701576), (496, 438485), (620, 350788), (1240, 175394), (2480, 87697)]