20996415

素因数分解:

$3^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1571}}^1$

素因数の和:1602

約数の個数: 48

約数和(自身を含む): 41198976

約数和(自身を除く): 20202561

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 81, 99, 135, 165, 243, 297, 405, 495, 891, 1215, 1485, 1571, 2673, 4455, 4713, 7855, 13365, 14139, 17281, 23565, 42417, 51843, 70695, 86405, 127251, 155529, 212085, 259215, 381753, 466587, 636255, 777645, 1399761, 1908765, 2332935, 4199283, 6998805, 20996415]

約数ペア:

[(1, 20996415), (3, 6998805), (5, 4199283), (9, 2332935), (11, 1908765), (15, 1399761), (27, 777645), (33, 636255), (45, 466587), (55, 381753), (81, 259215), (99, 212085), (135, 155529), (165, 127251), (243, 86405), (297, 70695), (405, 51843), (495, 42417), (891, 23565), (1215, 17281), (1485, 14139), (1571, 13365), (2673, 7855), (4455, 4713)]