18553899

素因数分解:

$3^1\times 7^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1$

素因数の和:129

約数の個数: 64

約数和(自身を含む): 33152000

約数和(自身を除く): 14598101

約数列:

[1, 3, 7, 13, 19, 21, 39, 49, 57, 73, 91, 133, 147, 219, 247, 273, 343, 399, 511, 637, 741, 931, 949, 1029, 1387, 1533, 1729, 1911, 2793, 2847, 3577, 4161, 4459, 5187, 6517, 6643, 9709, 10731, 12103, 13377, 18031, 19551, 19929, 25039, 29127, 36309, 46501, 54093, 67963, 75117, 84721, 126217, 139503, 203889, 254163, 325507, 378651, 475741, 883519, 976521, 1427223, 2650557, 6184633, 18553899]

約数ペア:

[(1, 18553899), (3, 6184633), (7, 2650557), (13, 1427223), (19, 976521), (21, 883519), (39, 475741), (49, 378651), (57, 325507), (73, 254163), (91, 203889), (133, 139503), (147, 126217), (219, 84721), (247, 75117), (273, 67963), (343, 54093), (399, 46501), (511, 36309), (637, 29127), (741, 25039), (931, 19929), (949, 19551), (1029, 18031), (1387, 13377), (1533, 12103), (1729, 10731), (1911, 9709), (2793, 6643), (2847, 6517), (3577, 5187), (4161, 4459)]