1289329540

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{229}}^1\times {\mathrm{1429}}^1$

素因数の和:1864

約数の個数: 48

約数和(自身を含む): 2735132400

約数和(自身を除く): 1445802860

約数列:

[1, 2, 4, 5, 10, 20, 197, 229, 394, 458, 788, 916, 985, 1145, 1429, 1970, 2290, 2858, 3940, 4580, 5716, 7145, 14290, 28580, 45113, 90226, 180452, 225565, 281513, 327241, 451130, 563026, 654482, 902260, 1126052, 1308964, 1407565, 1636205, 2815130, 3272410, 5630260, 6544820, 64466477, 128932954, 257865908, 322332385, 644664770, 1289329540]

約数ペア:

[(1, 1289329540), (2, 644664770), (4, 322332385), (5, 257865908), (10, 128932954), (20, 64466477), (197, 6544820), (229, 5630260), (394, 3272410), (458, 2815130), (788, 1636205), (916, 1407565), (985, 1308964), (1145, 1126052), (1429, 902260), (1970, 654482), (2290, 563026), (2858, 451130), (3940, 327241), (4580, 281513), (5716, 225565), (7145, 180452), (14290, 90226), (28580, 45113)]