400456480

素因数分解:

$2^5\times 5^1\times {\mathrm{137}}^1\times {\mathrm{18269}}^1$

素因数の和:18421

約数の個数: 48

約数和(自身を含む): 953036280

約数和(自身を除く): 552579800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 137, 160, 274, 548, 685, 1096, 1370, 2192, 2740, 4384, 5480, 10960, 18269, 21920, 36538, 73076, 91345, 146152, 182690, 292304, 365380, 584608, 730760, 1461520, 2502853, 2923040, 5005706, 10011412, 12514265, 20022824, 25028530, 40045648, 50057060, 80091296, 100114120, 200228240, 400456480]

約数ペア:

[(1, 400456480), (2, 200228240), (4, 100114120), (5, 80091296), (8, 50057060), (10, 40045648), (16, 25028530), (20, 20022824), (32, 12514265), (40, 10011412), (80, 5005706), (137, 2923040), (160, 2502853), (274, 1461520), (548, 730760), (685, 584608), (1096, 365380), (1370, 292304), (2192, 182690), (2740, 146152), (4384, 91345), (5480, 73076), (10960, 36538), (18269, 21920)]