21908504

素因数分解:

$2^3\times {\mathrm{53}}^1\times {\mathrm{163}}^1\times {\mathrm{317}}^1$

素因数の和:539

約数の個数: 32

約数和(自身を含む): 42243120

約数和(自身を除く): 20334616

約数列:

[1, 2, 4, 8, 53, 106, 163, 212, 317, 326, 424, 634, 652, 1268, 1304, 2536, 8639, 16801, 17278, 33602, 34556, 51671, 67204, 69112, 103342, 134408, 206684, 413368, 2738563, 5477126, 10954252, 21908504]

約数ペア:

[(1, 21908504), (2, 10954252), (4, 5477126), (8, 2738563), (53, 413368), (106, 206684), (163, 134408), (212, 103342), (317, 69112), (326, 67204), (424, 51671), (634, 34556), (652, 33602), (1268, 17278), (1304, 16801), (2536, 8639)]