20804916400

素因数分解:

$2^4\times 5^2\times {\mathrm{19}}^1\times {\mathrm{2737489}}^1$

素因数の和:2737526

約数の個数: 60

約数和(自身を含む): 52614557800

約数和(自身を除く): 31809641400

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 38, 40, 50, 76, 80, 95, 100, 152, 190, 200, 304, 380, 400, 475, 760, 950, 1520, 1900, 3800, 7600, 2737489, 5474978, 10949956, 13687445, 21899912, 27374890, 43799824, 52012291, 54749780, 68437225, 104024582, 109499560, 136874450, 208049164, 218999120, 260061455, 273748900, 416098328, 520122910, 547497800, 832196656, 1040245820, 1094995600, 1300307275, 2080491640, 2600614550, 4160983280, 5201229100, 10402458200, 20804916400]

約数ペア:

[(1, 20804916400), (2, 10402458200), (4, 5201229100), (5, 4160983280), (8, 2600614550), (10, 2080491640), (16, 1300307275), (19, 1094995600), (20, 1040245820), (25, 832196656), (38, 547497800), (40, 520122910), (50, 416098328), (76, 273748900), (80, 260061455), (95, 218999120), (100, 208049164), (152, 136874450), (190, 109499560), (200, 104024582), (304, 68437225), (380, 54749780), (400, 52012291), (475, 43799824), (760, 27374890), (950, 21899912), (1520, 13687445), (1900, 10949956), (3800, 5474978), (7600, 2737489)]