205341520

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{82799}}^1$

素因数の和:82843

約数の個数: 40

約数和(自身を含む): 492825600

約数和(自身を除く): 287484080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 82799, 165598, 331196, 413995, 662392, 827990, 1324784, 1655980, 2566769, 3311960, 5133538, 6623920, 10267076, 12833845, 20534152, 25667690, 41068304, 51335380, 102670760, 205341520]

約数ペア:

[(1, 205341520), (2, 102670760), (4, 51335380), (5, 41068304), (8, 25667690), (10, 20534152), (16, 12833845), (20, 10267076), (31, 6623920), (40, 5133538), (62, 3311960), (80, 2566769), (124, 1655980), (155, 1324784), (248, 827990), (310, 662392), (496, 413995), (620, 331196), (1240, 165598), (2480, 82799)]