18979168

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1061}}^1$

素因数の和:1127

約数の個数: 48

約数和(自身を含む): 41214096

約数和(自身を除く): 22234928

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 43, 52, 86, 104, 172, 208, 344, 416, 559, 688, 1061, 1118, 1376, 2122, 2236, 4244, 4472, 8488, 8944, 13793, 16976, 17888, 27586, 33952, 45623, 55172, 91246, 110344, 182492, 220688, 364984, 441376, 593099, 729968, 1186198, 1459936, 2372396, 4744792, 9489584, 18979168]

約数ペア:

[(1, 18979168), (2, 9489584), (4, 4744792), (8, 2372396), (13, 1459936), (16, 1186198), (26, 729968), (32, 593099), (43, 441376), (52, 364984), (86, 220688), (104, 182492), (172, 110344), (208, 91246), (344, 55172), (416, 45623), (559, 33952), (688, 27586), (1061, 17888), (1118, 16976), (1376, 13793), (2122, 8944), (2236, 8488), (4244, 4472)]