19827745

素因数分解:

$5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{251}}^1$

素因数の和:361

約数の個数: 32

約数和(自身を含む): 28498176

約数和(自身を除く): 8670431

約数列:

[1, 5, 7, 35, 37, 61, 185, 251, 259, 305, 427, 1255, 1295, 1757, 2135, 2257, 8785, 9287, 11285, 15311, 15799, 46435, 65009, 76555, 78995, 107177, 325045, 535885, 566507, 2832535, 3965549, 19827745]

約数ペア:

[(1, 19827745), (5, 3965549), (7, 2832535), (35, 566507), (37, 535885), (61, 325045), (185, 107177), (251, 78995), (259, 76555), (305, 65009), (427, 46435), (1255, 15799), (1295, 15311), (1757, 11285), (2135, 9287), (2257, 8785)]