31981768

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{223}}^1$

素因数の和:446

約数の個数: 64

約数和(自身を含む): 74511360

約数和(自身を除く): 42529592

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 197, 223, 364, 394, 446, 728, 788, 892, 1379, 1561, 1576, 1784, 2561, 2758, 2899, 3122, 5122, 5516, 5798, 6244, 10244, 11032, 11596, 12488, 17927, 20293, 20488, 23192, 35854, 40586, 43931, 71708, 81172, 87862, 143416, 162344, 175724, 307517, 351448, 571103, 615034, 1142206, 1230068, 2284412, 2460136, 3997721, 4568824, 7995442, 15990884, 31981768]

約数ペア:

[(1, 31981768), (2, 15990884), (4, 7995442), (7, 4568824), (8, 3997721), (13, 2460136), (14, 2284412), (26, 1230068), (28, 1142206), (52, 615034), (56, 571103), (91, 351448), (104, 307517), (182, 175724), (197, 162344), (223, 143416), (364, 87862), (394, 81172), (446, 71708), (728, 43931), (788, 40586), (892, 35854), (1379, 23192), (1561, 20488), (1576, 20293), (1784, 17927), (2561, 12488), (2758, 11596), (2899, 11032), (3122, 10244), (5122, 6244), (5516, 5798)]