20687796

素因数分解:

$2^2\times 3^2\times {\mathrm{509}}^1\times {\mathrm{1129}}^1$

素因数の和:1648

約数の個数: 36

約数和(自身を含む): 52443300

約数和(自身を除く): 31755504

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 509, 1018, 1129, 1527, 2036, 2258, 3054, 3387, 4516, 4581, 6108, 6774, 9162, 10161, 13548, 18324, 20322, 40644, 574661, 1149322, 1723983, 2298644, 3447966, 5171949, 6895932, 10343898, 20687796]

約数ペア:

[(1, 20687796), (2, 10343898), (3, 6895932), (4, 5171949), (6, 3447966), (9, 2298644), (12, 1723983), (18, 1149322), (36, 574661), (509, 40644), (1018, 20322), (1129, 18324), (1527, 13548), (2036, 10161), (2258, 9162), (3054, 6774), (3387, 6108), (4516, 4581)]