18990128

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{40927}}^1$

素因数の和:40964

約数の個数: 20

約数和(自身を含む): 38063040

約数和(自身を除く): 19072912

約数列:

[1, 2, 4, 8, 16, 29, 58, 116, 232, 464, 40927, 81854, 163708, 327416, 654832, 1186883, 2373766, 4747532, 9495064, 18990128]

約数ペア:

[(1, 18990128), (2, 9495064), (4, 4747532), (8, 2373766), (16, 1186883), (29, 654832), (58, 327416), (116, 163708), (232, 81854), (464, 40927)]