1288579220

素因数分解:

$2^2\times 5^1\times {\mathrm{2729}}^1\times {\mathrm{23609}}^1$

素因数の和:26347

約数の個数: 24

約数和(自身を含む): 2707122600

約数和(自身を除く): 1418543380

約数列:

[1, 2, 4, 5, 10, 20, 2729, 5458, 10916, 13645, 23609, 27290, 47218, 54580, 94436, 118045, 236090, 472180, 64428961, 128857922, 257715844, 322144805, 644289610, 1288579220]

約数ペア:

[(1, 1288579220), (2, 644289610), (4, 322144805), (5, 257715844), (10, 128857922), (20, 64428961), (2729, 472180), (5458, 236090), (10916, 118045), (13645, 94436), (23609, 54580), (27290, 47218)]