20337885

素因数分解:

$3^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{881}}^1$

素因数の和:920

約数の個数: 48

約数和(自身を含む): 38525760

約数和(自身を除く): 18187875

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 81, 95, 135, 171, 243, 285, 405, 513, 855, 881, 1215, 1539, 2565, 2643, 4405, 4617, 7695, 7929, 13215, 16739, 23085, 23787, 39645, 50217, 71361, 83695, 118935, 150651, 214083, 251085, 356805, 451953, 753255, 1070415, 1355859, 2259765, 4067577, 6779295, 20337885]

約数ペア:

[(1, 20337885), (3, 6779295), (5, 4067577), (9, 2259765), (15, 1355859), (19, 1070415), (27, 753255), (45, 451953), (57, 356805), (81, 251085), (95, 214083), (135, 150651), (171, 118935), (243, 83695), (285, 71361), (405, 50217), (513, 39645), (855, 23787), (881, 23085), (1215, 16739), (1539, 13215), (2565, 7929), (2643, 7695), (4405, 4617)]