206841520

素因数分解:

$2^4\times 5^1\times {\mathrm{991}}^1\times {\mathrm{2609}}^1$

素因数の和:3613

約数の個数: 40

約数和(自身を含む): 481576320

約数和(自身を除く): 274734800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 991, 1982, 2609, 3964, 4955, 5218, 7928, 9910, 10436, 13045, 15856, 19820, 20872, 26090, 39640, 41744, 52180, 79280, 104360, 208720, 2585519, 5171038, 10342076, 12927595, 20684152, 25855190, 41368304, 51710380, 103420760, 206841520]

約数ペア:

[(1, 206841520), (2, 103420760), (4, 51710380), (5, 41368304), (8, 25855190), (10, 20684152), (16, 12927595), (20, 10342076), (40, 5171038), (80, 2585519), (991, 208720), (1982, 104360), (2609, 79280), (3964, 52180), (4955, 41744), (5218, 39640), (7928, 26090), (9910, 20872), (10436, 19820), (13045, 15856)]