661787247

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{151}}^1\times {\mathrm{2251}}^1$

素因数の和:2475

約数の個数: 32

約数和(自身を含む): 985835520

約数和(自身を除く): 324048273

約数列:

[1, 3, 11, 33, 59, 151, 177, 453, 649, 1661, 1947, 2251, 4983, 6753, 8909, 24761, 26727, 74283, 97999, 132809, 293997, 339901, 398427, 1019703, 1460899, 3738911, 4382697, 11216733, 20054159, 60162477, 220595749, 661787247]

約数ペア:

[(1, 661787247), (3, 220595749), (11, 60162477), (33, 20054159), (59, 11216733), (151, 4382697), (177, 3738911), (453, 1460899), (649, 1019703), (1661, 398427), (1947, 339901), (2251, 293997), (4983, 132809), (6753, 97999), (8909, 74283), (24761, 26727)]