18724475

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1$

素因数の和:236

約数の個数: 48

約数和(自身を含む): 29569536

約数和(自身を除く): 10845061

約数列:

[1, 5, 7, 11, 25, 35, 55, 71, 77, 137, 175, 275, 355, 385, 497, 685, 781, 959, 1507, 1775, 1925, 2485, 3425, 3905, 4795, 5467, 7535, 9727, 10549, 12425, 19525, 23975, 27335, 37675, 48635, 52745, 68089, 106997, 136675, 243175, 263725, 340445, 534985, 748979, 1702225, 2674925, 3744895, 18724475]

約数ペア:

[(1, 18724475), (5, 3744895), (7, 2674925), (11, 1702225), (25, 748979), (35, 534985), (55, 340445), (71, 263725), (77, 243175), (137, 136675), (175, 106997), (275, 68089), (355, 52745), (385, 48635), (497, 37675), (685, 27335), (781, 23975), (959, 19525), (1507, 12425), (1775, 10549), (1925, 9727), (2485, 7535), (3425, 5467), (3905, 4795)]