1291264420

素因数分解:

$2^2\times 5^1\times {\mathrm{151}}^1\times {\mathrm{239}}^1\times {\mathrm{1789}}^1$

素因数の和:2188

約数の個数: 48

約数和(自身を含む): 2742566400

約数和(自身を除く): 1451301980

約数列:

[1, 2, 4, 5, 10, 20, 151, 239, 302, 478, 604, 755, 956, 1195, 1510, 1789, 2390, 3020, 3578, 4780, 7156, 8945, 17890, 35780, 36089, 72178, 144356, 180445, 270139, 360890, 427571, 540278, 721780, 855142, 1080556, 1350695, 1710284, 2137855, 2701390, 4275710, 5402780, 8551420, 64563221, 129126442, 258252884, 322816105, 645632210, 1291264420]

約数ペア:

[(1, 1291264420), (2, 645632210), (4, 322816105), (5, 258252884), (10, 129126442), (20, 64563221), (151, 8551420), (239, 5402780), (302, 4275710), (478, 2701390), (604, 2137855), (755, 1710284), (956, 1350695), (1195, 1080556), (1510, 855142), (1789, 721780), (2390, 540278), (3020, 427571), (3578, 360890), (4780, 270139), (7156, 180445), (8945, 144356), (17890, 72178), (35780, 36089)]