19964384

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{1319}}^1$

素因数の和:1383

約数の個数: 48

約数和(自身を含む): 43908480

約数和(自身を除く): 23944096

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 43, 44, 86, 88, 172, 176, 344, 352, 473, 688, 946, 1319, 1376, 1892, 2638, 3784, 5276, 7568, 10552, 14509, 15136, 21104, 29018, 42208, 56717, 58036, 113434, 116072, 226868, 232144, 453736, 464288, 623887, 907472, 1247774, 1814944, 2495548, 4991096, 9982192, 19964384]

約数ペア:

[(1, 19964384), (2, 9982192), (4, 4991096), (8, 2495548), (11, 1814944), (16, 1247774), (22, 907472), (32, 623887), (43, 464288), (44, 453736), (86, 232144), (88, 226868), (172, 116072), (176, 113434), (344, 58036), (352, 56717), (473, 42208), (688, 29018), (946, 21104), (1319, 15136), (1376, 14509), (1892, 10552), (2638, 7568), (3784, 5276)]