258541640

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{131909}}^1$

素因数の和:131934

約数の個数: 48

約数和(自身を含む): 676698300

約数和(自身を除く): 418156660

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 131909, 263818, 527636, 659545, 923363, 1055272, 1319090, 1846726, 2638180, 3693452, 4616815, 5276360, 6463541, 7386904, 9233630, 12927082, 18467260, 25854164, 32317705, 36934520, 51708328, 64635410, 129270820, 258541640]

約数ペア:

[(1, 258541640), (2, 129270820), (4, 64635410), (5, 51708328), (7, 36934520), (8, 32317705), (10, 25854164), (14, 18467260), (20, 12927082), (28, 9233630), (35, 7386904), (40, 6463541), (49, 5276360), (56, 4616815), (70, 3693452), (98, 2638180), (140, 1846726), (196, 1319090), (245, 1055272), (280, 923363), (392, 659545), (490, 527636), (980, 263818), (1960, 131909)]