205988900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{193}}^1\times {\mathrm{821}}^1$

素因数の和:1041

約数の個数: 72

約数和(自身を含む): 484463784

約数和(自身を除く): 278474884

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 193, 260, 325, 386, 650, 772, 821, 965, 1300, 1642, 1930, 2509, 3284, 3860, 4105, 4825, 5018, 8210, 9650, 10036, 10673, 12545, 16420, 19300, 20525, 21346, 25090, 41050, 42692, 50180, 53365, 62725, 82100, 106730, 125450, 158453, 213460, 250900, 266825, 316906, 533650, 633812, 792265, 1067300, 1584530, 2059889, 3169060, 3961325, 4119778, 7922650, 8239556, 10299445, 15845300, 20598890, 41197780, 51497225, 102994450, 205988900]

約数ペア:

[(1, 205988900), (2, 102994450), (4, 51497225), (5, 41197780), (10, 20598890), (13, 15845300), (20, 10299445), (25, 8239556), (26, 7922650), (50, 4119778), (52, 3961325), (65, 3169060), (100, 2059889), (130, 1584530), (193, 1067300), (260, 792265), (325, 633812), (386, 533650), (650, 316906), (772, 266825), (821, 250900), (965, 213460), (1300, 158453), (1642, 125450), (1930, 106730), (2509, 82100), (3284, 62725), (3860, 53365), (4105, 50180), (4825, 42692), (5018, 41050), (8210, 25090), (9650, 21346), (10036, 20525), (10673, 19300), (12545, 16420)]