400679780

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{9787}}^1$

素因数の和:9908

約数の個数: 48

約数和(自身を含む): 887967360

約数和(自身を除く): 487287580

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 89, 92, 115, 178, 230, 356, 445, 460, 890, 1780, 2047, 4094, 8188, 9787, 10235, 19574, 20470, 39148, 40940, 48935, 97870, 195740, 225101, 450202, 871043, 900404, 1125505, 1742086, 2251010, 3484172, 4355215, 4502020, 8710430, 17420860, 20033989, 40067978, 80135956, 100169945, 200339890, 400679780]

約数ペア:

[(1, 400679780), (2, 200339890), (4, 100169945), (5, 80135956), (10, 40067978), (20, 20033989), (23, 17420860), (46, 8710430), (89, 4502020), (92, 4355215), (115, 3484172), (178, 2251010), (230, 1742086), (356, 1125505), (445, 900404), (460, 871043), (890, 450202), (1780, 225101), (2047, 195740), (4094, 97870), (8188, 48935), (9787, 40940), (10235, 39148), (19574, 20470)]