20579936

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{811}}^1$

素因数の和:895

約数の個数: 48

約数和(自身を含む): 44403408

約数和(自身を除く): 23823472

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 61, 104, 122, 208, 244, 416, 488, 793, 811, 976, 1586, 1622, 1952, 3172, 3244, 6344, 6488, 10543, 12688, 12976, 21086, 25376, 25952, 42172, 49471, 84344, 98942, 168688, 197884, 337376, 395768, 643123, 791536, 1286246, 1583072, 2572492, 5144984, 10289968, 20579936]

約数ペア:

[(1, 20579936), (2, 10289968), (4, 5144984), (8, 2572492), (13, 1583072), (16, 1286246), (26, 791536), (32, 643123), (52, 395768), (61, 337376), (104, 197884), (122, 168688), (208, 98942), (244, 84344), (416, 49471), (488, 42172), (793, 25952), (811, 25376), (976, 21086), (1586, 12976), (1622, 12688), (1952, 10543), (3172, 6488), (3244, 6344)]