21197559

素因数分解:

$3^1\times {\mathrm{19}}^2\times {\mathrm{23}}^2\times {\mathrm{37}}^1$

素因数の和:124

約数の個数: 36

約数和(自身を含む): 32025336

約数和(自身を除く): 10827777

約数列:

[1, 3, 19, 23, 37, 57, 69, 111, 361, 437, 529, 703, 851, 1083, 1311, 1587, 2109, 2553, 8303, 10051, 13357, 16169, 19573, 24909, 30153, 40071, 48507, 58719, 190969, 307211, 371887, 572907, 921633, 1115661, 7065853, 21197559]

約数ペア:

[(1, 21197559), (3, 7065853), (19, 1115661), (23, 921633), (37, 572907), (57, 371887), (69, 307211), (111, 190969), (361, 58719), (437, 48507), (529, 40071), (703, 30153), (851, 24909), (1083, 19573), (1311, 16169), (1587, 13357), (2109, 10051), (2553, 8303)]