20928488

素因数分解:

$2^3\times 7^3\times {\mathrm{29}}^1\times {\mathrm{263}}^1$

素因数の和:319

約数の個数: 64

約数和(自身を含む): 47520000

約数和(自身を除く): 26591512

約数列:

[1, 2, 4, 7, 8, 14, 28, 29, 49, 56, 58, 98, 116, 196, 203, 232, 263, 343, 392, 406, 526, 686, 812, 1052, 1372, 1421, 1624, 1841, 2104, 2744, 2842, 3682, 5684, 7364, 7627, 9947, 11368, 12887, 14728, 15254, 19894, 25774, 30508, 39788, 51548, 53389, 61016, 79576, 90209, 103096, 106778, 180418, 213556, 360836, 373723, 427112, 721672, 747446, 1494892, 2616061, 2989784, 5232122, 10464244, 20928488]

約数ペア:

[(1, 20928488), (2, 10464244), (4, 5232122), (7, 2989784), (8, 2616061), (14, 1494892), (28, 747446), (29, 721672), (49, 427112), (56, 373723), (58, 360836), (98, 213556), (116, 180418), (196, 106778), (203, 103096), (232, 90209), (263, 79576), (343, 61016), (392, 53389), (406, 51548), (526, 39788), (686, 30508), (812, 25774), (1052, 19894), (1372, 15254), (1421, 14728), (1624, 12887), (1841, 11368), (2104, 9947), (2744, 7627), (2842, 7364), (3682, 5684)]