18666538

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{73}}^1\times {\mathrm{197}}^1$

素因数の和:342

約数の個数: 32

約数和(自身を含む): 31648320

約数和(自身を除く): 12981782

約数列:

[1, 2, 11, 22, 59, 73, 118, 146, 197, 394, 649, 803, 1298, 1606, 2167, 4307, 4334, 8614, 11623, 14381, 23246, 28762, 47377, 94754, 127853, 158191, 255706, 316382, 848479, 1696958, 9333269, 18666538]

約数ペア:

[(1, 18666538), (2, 9333269), (11, 1696958), (22, 848479), (59, 316382), (73, 255706), (118, 158191), (146, 127853), (197, 94754), (394, 47377), (649, 28762), (803, 23246), (1298, 14381), (1606, 11623), (2167, 8614), (4307, 4334)]