20087847

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{47}}^1\times {\mathrm{281}}^1$

素因数の和:360

約数の個数: 36

約数和(自身を含む): 32202144

約数和(自身を除く): 12114297

約数列:

[1, 3, 9, 13, 39, 47, 117, 141, 169, 281, 423, 507, 611, 843, 1521, 1833, 2529, 3653, 5499, 7943, 10959, 13207, 23829, 32877, 39621, 47489, 71487, 118863, 142467, 171691, 427401, 515073, 1545219, 2231983, 6695949, 20087847]

約数ペア:

[(1, 20087847), (3, 6695949), (9, 2231983), (13, 1545219), (39, 515073), (47, 427401), (117, 171691), (141, 142467), (169, 118863), (281, 71487), (423, 47489), (507, 39621), (611, 32877), (843, 23829), (1521, 13207), (1833, 10959), (2529, 7943), (3653, 5499)]