87391325

素因数分解:

$5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{181}}^1$

素因数の和:318

約数の個数: 48

約数和(自身を含む): 129991680

約数和(自身を除く): 42600355

約数列:

[1, 5, 7, 25, 31, 35, 89, 155, 175, 181, 217, 445, 623, 775, 905, 1085, 1267, 2225, 2759, 3115, 4525, 5425, 5611, 6335, 13795, 15575, 16109, 19313, 28055, 31675, 39277, 68975, 80545, 96565, 112763, 140275, 196385, 402725, 482825, 499379, 563815, 981925, 2496895, 2819075, 3495653, 12484475, 17478265, 87391325]

約数ペア:

[(1, 87391325), (5, 17478265), (7, 12484475), (25, 3495653), (31, 2819075), (35, 2496895), (89, 981925), (155, 563815), (175, 499379), (181, 482825), (217, 402725), (445, 196385), (623, 140275), (775, 112763), (905, 96565), (1085, 80545), (1267, 68975), (2225, 39277), (2759, 31675), (3115, 28055), (4525, 19313), (5425, 16109), (5611, 15575), (6335, 13795)]