18866164

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{251}}^1$

素因数の和:340

約数の個数: 48

約数和(自身を含む): 37255680

約数和(自身を除く): 18389516

約数列:

[1, 2, 4, 19, 23, 38, 43, 46, 76, 86, 92, 172, 251, 437, 502, 817, 874, 989, 1004, 1634, 1748, 1978, 3268, 3956, 4769, 5773, 9538, 10793, 11546, 18791, 19076, 21586, 23092, 37582, 43172, 75164, 109687, 205067, 219374, 248239, 410134, 438748, 496478, 820268, 992956, 4716541, 9433082, 18866164]

約数ペア:

[(1, 18866164), (2, 9433082), (4, 4716541), (19, 992956), (23, 820268), (38, 496478), (43, 438748), (46, 410134), (76, 248239), (86, 219374), (92, 205067), (172, 109687), (251, 75164), (437, 43172), (502, 37582), (817, 23092), (874, 21586), (989, 19076), (1004, 18791), (1634, 11546), (1748, 10793), (1978, 9538), (3268, 5773), (3956, 4769)]