290865350

素因数分解:

$2^1\times 5^2\times {\mathrm{89}}^1\times {\mathrm{163}}^1\times {\mathrm{401}}^1$

素因数の和:665

約数の個数: 48

約数和(自身を含む): 551817360

約数和(自身を除く): 260952010

約数列:

[1, 2, 5, 10, 25, 50, 89, 163, 178, 326, 401, 445, 802, 815, 890, 1630, 2005, 2225, 4010, 4075, 4450, 8150, 10025, 14507, 20050, 29014, 35689, 65363, 71378, 72535, 130726, 145070, 178445, 326815, 356890, 362675, 653630, 725350, 892225, 1634075, 1784450, 3268150, 5817307, 11634614, 29086535, 58173070, 145432675, 290865350]

約数ペア:

[(1, 290865350), (2, 145432675), (5, 58173070), (10, 29086535), (25, 11634614), (50, 5817307), (89, 3268150), (163, 1784450), (178, 1634075), (326, 892225), (401, 725350), (445, 653630), (802, 362675), (815, 356890), (890, 326815), (1630, 178445), (2005, 145070), (2225, 130726), (4010, 72535), (4075, 71378), (4450, 65363), (8150, 35689), (10025, 29014), (14507, 20050)]