27996220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{311}}^1\times {\mathrm{643}}^1$

素因数の和:970

約数の個数: 48

約数和(自身を含む): 67511808

約数和(自身を除く): 39515588

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 311, 622, 643, 1244, 1286, 1555, 2177, 2572, 3110, 3215, 4354, 4501, 6220, 6430, 8708, 9002, 10885, 12860, 18004, 21770, 22505, 43540, 45010, 90020, 199973, 399946, 799892, 999865, 1399811, 1999730, 2799622, 3999460, 5599244, 6999055, 13998110, 27996220]

約数ペア:

[(1, 27996220), (2, 13998110), (4, 6999055), (5, 5599244), (7, 3999460), (10, 2799622), (14, 1999730), (20, 1399811), (28, 999865), (35, 799892), (70, 399946), (140, 199973), (311, 90020), (622, 45010), (643, 43540), (1244, 22505), (1286, 21770), (1555, 18004), (2177, 12860), (2572, 10885), (3110, 9002), (3215, 8708), (4354, 6430), (4501, 6220)]