20786904

素因数分解:

$2^3\times 3^2\times {\mathrm{449}}^1\times {\mathrm{643}}^1$

素因数の和:1104

約数の個数: 48

約数和(自身を含む): 56511000

約数和(自身を除く): 35724096

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 449, 643, 898, 1286, 1347, 1796, 1929, 2572, 2694, 3592, 3858, 4041, 5144, 5388, 5787, 7716, 8082, 10776, 11574, 15432, 16164, 23148, 32328, 46296, 288707, 577414, 866121, 1154828, 1732242, 2309656, 2598363, 3464484, 5196726, 6928968, 10393452, 20786904]

約数ペア:

[(1, 20786904), (2, 10393452), (3, 6928968), (4, 5196726), (6, 3464484), (8, 2598363), (9, 2309656), (12, 1732242), (18, 1154828), (24, 866121), (36, 577414), (72, 288707), (449, 46296), (643, 32328), (898, 23148), (1286, 16164), (1347, 15432), (1796, 11574), (1929, 10776), (2572, 8082), (2694, 7716), (3592, 5787), (3858, 5388), (4041, 5144)]