420225920

素因数分解:

$2^7\times 5^1\times {\mathrm{656603}}^1$

素因数の和:656622

約数の個数: 32

約数和(自身を含む): 1004604120

約数和(自身を除く): 584378200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 656603, 1313206, 2626412, 3283015, 5252824, 6566030, 10505648, 13132060, 21011296, 26264120, 42022592, 52528240, 84045184, 105056480, 210112960, 420225920]

約数ペア:

[(1, 420225920), (2, 210112960), (4, 105056480), (5, 84045184), (8, 52528240), (10, 42022592), (16, 26264120), (20, 21011296), (32, 13132060), (40, 10505648), (64, 6566030), (80, 5252824), (128, 3283015), (160, 2626412), (320, 1313206), (640, 656603)]