21350476

素因数分解:

$2^2\times 7^2\times {\mathrm{97}}^1\times {\mathrm{1123}}^1$

素因数の和:1238

約数の個数: 36

約数和(自身を含む): 43950648

約数和(自身を除く): 22600172

約数列:

[1, 2, 4, 7, 14, 28, 49, 97, 98, 194, 196, 388, 679, 1123, 1358, 2246, 2716, 4492, 4753, 7861, 9506, 15722, 19012, 31444, 55027, 108931, 110054, 217862, 220108, 435724, 762517, 1525034, 3050068, 5337619, 10675238, 21350476]

約数ペア:

[(1, 21350476), (2, 10675238), (4, 5337619), (7, 3050068), (14, 1525034), (28, 762517), (49, 435724), (97, 220108), (98, 217862), (194, 110054), (196, 108931), (388, 55027), (679, 31444), (1123, 19012), (1358, 15722), (2246, 9506), (2716, 7861), (4492, 4753)]