20704070

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{541}}^1$

素因数の和:680

約数の個数: 32

約数和(自身を含む): 38633760

約数和(自身を除く): 17929690

約数列:

[1, 2, 5, 10, 43, 86, 89, 178, 215, 430, 445, 541, 890, 1082, 2705, 3827, 5410, 7654, 19135, 23263, 38270, 46526, 48149, 96298, 116315, 232630, 240745, 481490, 2070407, 4140814, 10352035, 20704070]

約数ペア:

[(1, 20704070), (2, 10352035), (5, 4140814), (10, 2070407), (43, 481490), (86, 240745), (89, 232630), (178, 116315), (215, 96298), (430, 48149), (445, 46526), (541, 38270), (890, 23263), (1082, 19135), (2705, 7654), (3827, 5410)]