19985376

素因数分解:

$2^5\times 3^1\times {\mathrm{409}}^1\times {\mathrm{509}}^1$

素因数の和:931

約数の個数: 48

約数和(自身を含む): 52693200

約数和(自身を除く): 32707824

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 96, 409, 509, 818, 1018, 1227, 1527, 1636, 2036, 2454, 3054, 3272, 4072, 4908, 6108, 6544, 8144, 9816, 12216, 13088, 16288, 19632, 24432, 39264, 48864, 208181, 416362, 624543, 832724, 1249086, 1665448, 2498172, 3330896, 4996344, 6661792, 9992688, 19985376]

約数ペア:

[(1, 19985376), (2, 9992688), (3, 6661792), (4, 4996344), (6, 3330896), (8, 2498172), (12, 1665448), (16, 1249086), (24, 832724), (32, 624543), (48, 416362), (96, 208181), (409, 48864), (509, 39264), (818, 24432), (1018, 19632), (1227, 16288), (1527, 13088), (1636, 12216), (2036, 9816), (2454, 8144), (3054, 6544), (3272, 6108), (4072, 4908)]