201551180

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{199}}^1\times {\mathrm{569}}^1$

素因数の和:866

約数の個数: 48

約数和(自身を含む): 430920000

約数和(自身を除く): 229368820

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 199, 356, 398, 445, 569, 796, 890, 995, 1138, 1780, 1990, 2276, 2845, 3980, 5690, 11380, 17711, 35422, 50641, 70844, 88555, 101282, 113231, 177110, 202564, 226462, 253205, 354220, 452924, 506410, 566155, 1012820, 1132310, 2264620, 10077559, 20155118, 40310236, 50387795, 100775590, 201551180]

約数ペア:

[(1, 201551180), (2, 100775590), (4, 50387795), (5, 40310236), (10, 20155118), (20, 10077559), (89, 2264620), (178, 1132310), (199, 1012820), (356, 566155), (398, 506410), (445, 452924), (569, 354220), (796, 253205), (890, 226462), (995, 202564), (1138, 177110), (1780, 113231), (1990, 101282), (2276, 88555), (2845, 70844), (3980, 50641), (5690, 35422), (11380, 17711)]