18498676

素因数分解:

$2^2\times 7^3\times {\mathrm{97}}^1\times {\mathrm{139}}^1$

素因数の和:261

約数の個数: 48

約数和(自身を含む): 38416000

約数和(自身を除く): 19917324

約数列:

[1, 2, 4, 7, 14, 28, 49, 97, 98, 139, 194, 196, 278, 343, 388, 556, 679, 686, 973, 1358, 1372, 1946, 2716, 3892, 4753, 6811, 9506, 13483, 13622, 19012, 26966, 27244, 33271, 47677, 53932, 66542, 94381, 95354, 133084, 188762, 190708, 377524, 660667, 1321334, 2642668, 4624669, 9249338, 18498676]

約数ペア:

[(1, 18498676), (2, 9249338), (4, 4624669), (7, 2642668), (14, 1321334), (28, 660667), (49, 377524), (97, 190708), (98, 188762), (139, 133084), (194, 95354), (196, 94381), (278, 66542), (343, 53932), (388, 47677), (556, 33271), (679, 27244), (686, 26966), (973, 19012), (1358, 13622), (1372, 13483), (1946, 9506), (2716, 6811), (3892, 4753)]