202790950

素因数分解:

$2^1\times 5^2\times {\mathrm{89}}^1\times {\mathrm{199}}^1\times {\mathrm{229}}^1$

素因数の和:529

約数の個数: 48

約数和(自身を含む): 385020000

約数和(自身を除く): 182229050

約数列:

[1, 2, 5, 10, 25, 50, 89, 178, 199, 229, 398, 445, 458, 890, 995, 1145, 1990, 2225, 2290, 4450, 4975, 5725, 9950, 11450, 17711, 20381, 35422, 40762, 45571, 88555, 91142, 101905, 177110, 203810, 227855, 442775, 455710, 509525, 885550, 1019050, 1139275, 2278550, 4055819, 8111638, 20279095, 40558190, 101395475, 202790950]

約数ペア:

[(1, 202790950), (2, 101395475), (5, 40558190), (10, 20279095), (25, 8111638), (50, 4055819), (89, 2278550), (178, 1139275), (199, 1019050), (229, 885550), (398, 509525), (445, 455710), (458, 442775), (890, 227855), (995, 203810), (1145, 177110), (1990, 101905), (2225, 91142), (2290, 88555), (4450, 45571), (4975, 40762), (5725, 35422), (9950, 20381), (11450, 17711)]