19903360

素因数分解:

$2^7\times 5^1\times {\mathrm{137}}^1\times {\mathrm{227}}^1$

素因数の和:383

約数の個数: 64

約数和(自身を含む): 48139920

約数和(自身を除く): 28236560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 137, 160, 227, 274, 320, 454, 548, 640, 685, 908, 1096, 1135, 1370, 1816, 2192, 2270, 2740, 3632, 4384, 4540, 5480, 7264, 8768, 9080, 10960, 14528, 17536, 18160, 21920, 29056, 31099, 36320, 43840, 62198, 72640, 87680, 124396, 145280, 155495, 248792, 310990, 497584, 621980, 995168, 1243960, 1990336, 2487920, 3980672, 4975840, 9951680, 19903360]

約数ペア:

[(1, 19903360), (2, 9951680), (4, 4975840), (5, 3980672), (8, 2487920), (10, 1990336), (16, 1243960), (20, 995168), (32, 621980), (40, 497584), (64, 310990), (80, 248792), (128, 155495), (137, 145280), (160, 124396), (227, 87680), (274, 72640), (320, 62198), (454, 43840), (548, 36320), (640, 31099), (685, 29056), (908, 21920), (1096, 18160), (1135, 17536), (1370, 14528), (1816, 10960), (2192, 9080), (2270, 8768), (2740, 7264), (3632, 5480), (4384, 4540)]