20818112

素因数分解:

$2^6\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1499}}^1$

素因数の和:1549

約数の個数: 56

約数和(自身を含む): 48768000

約数和(自身を除く): 27949888

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 32, 56, 62, 64, 112, 124, 217, 224, 248, 434, 448, 496, 868, 992, 1499, 1736, 1984, 2998, 3472, 5996, 6944, 10493, 11992, 13888, 20986, 23984, 41972, 46469, 47968, 83944, 92938, 95936, 167888, 185876, 325283, 335776, 371752, 650566, 671552, 743504, 1301132, 1487008, 2602264, 2974016, 5204528, 10409056, 20818112]

約数ペア:

[(1, 20818112), (2, 10409056), (4, 5204528), (7, 2974016), (8, 2602264), (14, 1487008), (16, 1301132), (28, 743504), (31, 671552), (32, 650566), (56, 371752), (62, 335776), (64, 325283), (112, 185876), (124, 167888), (217, 95936), (224, 92938), (248, 83944), (434, 47968), (448, 46469), (496, 41972), (868, 23984), (992, 20986), (1499, 13888), (1736, 11992), (1984, 10493), (2998, 6944), (3472, 5996)]