20157760

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{8999}}^1$

素因数の和:9023

約数の個数: 56

約数和(自身を含む): 54864000

約数和(自身を除く): 34706240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 140, 160, 224, 280, 320, 448, 560, 1120, 2240, 8999, 17998, 35996, 44995, 62993, 71992, 89990, 125986, 143984, 179980, 251972, 287968, 314965, 359960, 503944, 575936, 629930, 719920, 1007888, 1259860, 1439840, 2015776, 2519720, 2879680, 4031552, 5039440, 10078880, 20157760]

約数ペア:

[(1, 20157760), (2, 10078880), (4, 5039440), (5, 4031552), (7, 2879680), (8, 2519720), (10, 2015776), (14, 1439840), (16, 1259860), (20, 1007888), (28, 719920), (32, 629930), (35, 575936), (40, 503944), (56, 359960), (64, 314965), (70, 287968), (80, 251972), (112, 179980), (140, 143984), (160, 125986), (224, 89990), (280, 71992), (320, 62993), (448, 44995), (560, 35996), (1120, 17998), (2240, 8999)]