19948978

素因数分解:

$2^1\times 7^2\times {\mathrm{251}}^1\times {\mathrm{811}}^1$

素因数の和:1078

約数の個数: 24

約数和(自身を含む): 34990704

約数和(自身を除く): 15041726

約数列:

[1, 2, 7, 14, 49, 98, 251, 502, 811, 1622, 1757, 3514, 5677, 11354, 12299, 24598, 39739, 79478, 203561, 407122, 1424927, 2849854, 9974489, 19948978]

約数ペア:

[(1, 19948978), (2, 9974489), (7, 2849854), (14, 1424927), (49, 407122), (98, 203561), (251, 79478), (502, 39739), (811, 24598), (1622, 12299), (1757, 11354), (3514, 5677)]