419398420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{42193}}^1$

素因数の和:42280

約数の個数: 48

約数和(自身を含む): 1020757248

約数和(自身を除く): 601358828

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1988, 2485, 4970, 9940, 42193, 84386, 168772, 210965, 295351, 421930, 590702, 843860, 1181404, 1476755, 2953510, 2995703, 5907020, 5991406, 11982812, 14978515, 20969921, 29957030, 41939842, 59914060, 83879684, 104849605, 209699210, 419398420]

約数ペア:

[(1, 419398420), (2, 209699210), (4, 104849605), (5, 83879684), (7, 59914060), (10, 41939842), (14, 29957030), (20, 20969921), (28, 14978515), (35, 11982812), (70, 5991406), (71, 5907020), (140, 2995703), (142, 2953510), (284, 1476755), (355, 1181404), (497, 843860), (710, 590702), (994, 421930), (1420, 295351), (1988, 210965), (2485, 168772), (4970, 84386), (9940, 42193)]