18876215

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{163}}^1$

素因数の和:263

約数の個数: 32

約数和(自身を含む): 25505280

約数和(自身を除く): 6629065

約数列:

[1, 5, 19, 23, 53, 95, 115, 163, 265, 437, 815, 1007, 1219, 2185, 3097, 3749, 5035, 6095, 8639, 15485, 18745, 23161, 43195, 71231, 115805, 164141, 198697, 356155, 820705, 993485, 3775243, 18876215]

約数ペア:

[(1, 18876215), (5, 3775243), (19, 993485), (23, 820705), (53, 356155), (95, 198697), (115, 164141), (163, 115805), (265, 71231), (437, 43195), (815, 23161), (1007, 18745), (1219, 15485), (2185, 8639), (3097, 6095), (3749, 5035)]