215548509

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{251}}^1\times {\mathrm{491}}^1$

素因数の和:809

約数の個数: 32

約数和(自身を含む): 321366528

約数和(自身を除く): 105818019

約数列:

[1, 3, 11, 33, 53, 159, 251, 491, 583, 753, 1473, 1749, 2761, 5401, 8283, 13303, 16203, 26023, 39909, 78069, 123241, 146333, 286253, 369723, 438999, 858759, 1355651, 4066953, 6531773, 19595319, 71849503, 215548509]

約数ペア:

[(1, 215548509), (3, 71849503), (11, 19595319), (33, 6531773), (53, 4066953), (159, 1355651), (251, 858759), (491, 438999), (583, 369723), (753, 286253), (1473, 146333), (1749, 123241), (2761, 78069), (5401, 39909), (8283, 26023), (13303, 16203)]