21398091

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1609}}^1$

素因数の和:1667

約数の個数: 32

約数和(自身を含む): 34621440

約数和(自身を除く): 13223349

約数列:

[1, 3, 11, 13, 31, 33, 39, 93, 143, 341, 403, 429, 1023, 1209, 1609, 4433, 4827, 13299, 17699, 20917, 49879, 53097, 62751, 149637, 230087, 548669, 648427, 690261, 1646007, 1945281, 7132697, 21398091]

約数ペア:

[(1, 21398091), (3, 7132697), (11, 1945281), (13, 1646007), (31, 690261), (33, 648427), (39, 548669), (93, 230087), (143, 149637), (341, 62751), (403, 53097), (429, 49879), (1023, 20917), (1209, 17699), (1609, 13299), (4433, 4827)]