18758225

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{101}}^1$

素因数の和:170

約数の個数: 48

約数和(自身を含む): 27319680

約数和(自身を除く): 8561455

約数列:

[1, 5, 17, 19, 23, 25, 85, 95, 101, 115, 323, 391, 425, 437, 475, 505, 575, 1615, 1717, 1919, 1955, 2185, 2323, 2525, 7429, 8075, 8585, 9595, 9775, 10925, 11615, 32623, 37145, 39491, 42925, 44137, 47975, 58075, 163115, 185725, 197455, 220685, 750329, 815575, 987275, 1103425, 3751645, 18758225]

約数ペア:

[(1, 18758225), (5, 3751645), (17, 1103425), (19, 987275), (23, 815575), (25, 750329), (85, 220685), (95, 197455), (101, 185725), (115, 163115), (323, 58075), (391, 47975), (425, 44137), (437, 42925), (475, 39491), (505, 37145), (575, 32623), (1615, 11615), (1717, 10925), (1919, 9775), (1955, 9595), (2185, 8585), (2323, 8075), (2525, 7429)]