20847904

素因数分解:

$2^5\times 7^1\times {\mathrm{11}}^1\times {\mathrm{8461}}^1$

素因数の和:8489

約数の個数: 48

約数和(自身を含む): 51178176

約数和(自身を除く): 30330272

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 32, 44, 56, 77, 88, 112, 154, 176, 224, 308, 352, 616, 1232, 2464, 8461, 16922, 33844, 59227, 67688, 93071, 118454, 135376, 186142, 236908, 270752, 372284, 473816, 651497, 744568, 947632, 1302994, 1489136, 1895264, 2605988, 2978272, 5211976, 10423952, 20847904]

約数ペア:

[(1, 20847904), (2, 10423952), (4, 5211976), (7, 2978272), (8, 2605988), (11, 1895264), (14, 1489136), (16, 1302994), (22, 947632), (28, 744568), (32, 651497), (44, 473816), (56, 372284), (77, 270752), (88, 236908), (112, 186142), (154, 135376), (176, 118454), (224, 93071), (308, 67688), (352, 59227), (616, 33844), (1232, 16922), (2464, 8461)]