20778018801

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{307}}^1\times {\mathrm{569}}^1\times {\mathrm{1279}}^1$

素因数の和:2189

約数の個数: 32

約数和(自身を含む): 28763750400

約数和(自身を除く): 7985731599

約数列:

[1, 3, 31, 93, 307, 569, 921, 1279, 1707, 3837, 9517, 17639, 28551, 39649, 52917, 118947, 174683, 392653, 524049, 727751, 1177959, 2183253, 5415173, 12172243, 16245519, 22560281, 36516729, 67680843, 223419557, 670258671, 6926006267, 20778018801]

約数ペア:

[(1, 20778018801), (3, 6926006267), (31, 670258671), (93, 223419557), (307, 67680843), (569, 36516729), (921, 22560281), (1279, 16245519), (1707, 12172243), (3837, 5415173), (9517, 2183253), (17639, 1177959), (28551, 727751), (39649, 524049), (52917, 392653), (118947, 174683)]