20359040

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2447}}^1$

素因数の和:2479

約数の個数: 64

約数和(自身を含む): 52436160

約数和(自身を除く): 32077120

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 260, 320, 416, 520, 640, 832, 1040, 1664, 2080, 2447, 4160, 4894, 8320, 9788, 12235, 19576, 24470, 31811, 39152, 48940, 63622, 78304, 97880, 127244, 156608, 159055, 195760, 254488, 313216, 318110, 391520, 508976, 636220, 783040, 1017952, 1272440, 1566080, 2035904, 2544880, 4071808, 5089760, 10179520, 20359040]

約数ペア:

[(1, 20359040), (2, 10179520), (4, 5089760), (5, 4071808), (8, 2544880), (10, 2035904), (13, 1566080), (16, 1272440), (20, 1017952), (26, 783040), (32, 636220), (40, 508976), (52, 391520), (64, 318110), (65, 313216), (80, 254488), (104, 195760), (128, 159055), (130, 156608), (160, 127244), (208, 97880), (260, 78304), (320, 63622), (416, 48940), (520, 39152), (640, 31811), (832, 24470), (1040, 19576), (1664, 12235), (2080, 9788), (2447, 8320), (4160, 4894)]