20354655

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{1439}}^1$

素因数の和:1511

約数の個数: 32

約数和(自身を含む): 34836480

約数和(自身を除く): 14481825

約数列:

[1, 3, 5, 15, 23, 41, 69, 115, 123, 205, 345, 615, 943, 1439, 2829, 4317, 4715, 7195, 14145, 21585, 33097, 58999, 99291, 165485, 176997, 294995, 496455, 884985, 1356977, 4070931, 6784885, 20354655]

約数ペア:

[(1, 20354655), (3, 6784885), (5, 4070931), (15, 1356977), (23, 884985), (41, 496455), (69, 294995), (115, 176997), (123, 165485), (205, 99291), (345, 58999), (615, 33097), (943, 21585), (1439, 14145), (2829, 7195), (4317, 4715)]