21186385

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{359}}^1$

素因数の和:441

約数の個数: 32

約数和(自身を含む): 29548800

約数和(自身を除く): 8362415

約数列:

[1, 5, 11, 29, 37, 55, 145, 185, 319, 359, 407, 1073, 1595, 1795, 2035, 3949, 5365, 10411, 11803, 13283, 19745, 52055, 59015, 66415, 114521, 146113, 385207, 572605, 730565, 1926035, 4237277, 21186385]

約数ペア:

[(1, 21186385), (5, 4237277), (11, 1926035), (29, 730565), (37, 572605), (55, 385207), (145, 146113), (185, 114521), (319, 66415), (359, 59015), (407, 52055), (1073, 19745), (1595, 13283), (1795, 11803), (2035, 10411), (3949, 5365)]