80533880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{4051}}^1$

素因数の和:4140

約数の個数: 64

約数和(自身を含む): 210055680

約数和(自身を除く): 129521800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 71, 140, 142, 280, 284, 355, 497, 568, 710, 994, 1420, 1988, 2485, 2840, 3976, 4051, 4970, 8102, 9940, 16204, 19880, 20255, 28357, 32408, 40510, 56714, 81020, 113428, 141785, 162040, 226856, 283570, 287621, 567140, 575242, 1134280, 1150484, 1438105, 2013347, 2300968, 2876210, 4026694, 5752420, 8053388, 10066735, 11504840, 16106776, 20133470, 40266940, 80533880]

約数ペア:

[(1, 80533880), (2, 40266940), (4, 20133470), (5, 16106776), (7, 11504840), (8, 10066735), (10, 8053388), (14, 5752420), (20, 4026694), (28, 2876210), (35, 2300968), (40, 2013347), (56, 1438105), (70, 1150484), (71, 1134280), (140, 575242), (142, 567140), (280, 287621), (284, 283570), (355, 226856), (497, 162040), (568, 141785), (710, 113428), (994, 81020), (1420, 56714), (1988, 40510), (2485, 32408), (2840, 28357), (3976, 20255), (4051, 19880), (4970, 16204), (8102, 9940)]