20512073360

素因数分解:

$2^4\times 5^1\times {\mathrm{839}}^1\times {\mathrm{305603}}^1$

素因数の和:306455

約数の個数: 40

約数和(自身を含む): 47747568960

約数和(自身を除く): 27235495600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 839, 1678, 3356, 4195, 6712, 8390, 13424, 16780, 33560, 67120, 305603, 611206, 1222412, 1528015, 2444824, 3056030, 4889648, 6112060, 12224120, 24448240, 256400917, 512801834, 1025603668, 1282004585, 2051207336, 2564009170, 4102414672, 5128018340, 10256036680, 20512073360]

約数ペア:

[(1, 20512073360), (2, 10256036680), (4, 5128018340), (5, 4102414672), (8, 2564009170), (10, 2051207336), (16, 1282004585), (20, 1025603668), (40, 512801834), (80, 256400917), (839, 24448240), (1678, 12224120), (3356, 6112060), (4195, 4889648), (6712, 3056030), (8390, 2444824), (13424, 1528015), (16780, 1222412), (33560, 611206), (67120, 305603)]