20996444

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{647}}^1$

素因数の和:738

約数の個数: 48

約数和(自身を含む): 44997120

約数和(自身を除く): 24000676

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 61, 76, 122, 133, 244, 266, 427, 532, 647, 854, 1159, 1294, 1708, 2318, 2588, 4529, 4636, 8113, 9058, 12293, 16226, 18116, 24586, 32452, 39467, 49172, 78934, 86051, 157868, 172102, 276269, 344204, 552538, 749873, 1105076, 1499746, 2999492, 5249111, 10498222, 20996444]

約数ペア:

[(1, 20996444), (2, 10498222), (4, 5249111), (7, 2999492), (14, 1499746), (19, 1105076), (28, 749873), (38, 552538), (61, 344204), (76, 276269), (122, 172102), (133, 157868), (244, 86051), (266, 78934), (427, 49172), (532, 39467), (647, 32452), (854, 24586), (1159, 18116), (1294, 16226), (1708, 12293), (2318, 9058), (2588, 8113), (4529, 4636)]