199955525

素因数分解:

$5^2\times 7^2\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{71}}^1$

素因数の和:136

約数の個数: 108

約数和(自身を含む): 338415840

約数和(自身を除く): 138460315

約数列:

[1, 5, 7, 11, 19, 25, 35, 49, 55, 71, 77, 95, 121, 133, 175, 209, 245, 275, 355, 385, 475, 497, 539, 605, 665, 781, 847, 931, 1045, 1225, 1349, 1463, 1775, 1925, 2299, 2485, 2695, 3025, 3325, 3479, 3905, 4235, 4655, 5225, 5467, 5929, 6745, 7315, 8591, 9443, 10241, 11495, 12425, 13475, 14839, 16093, 17395, 19525, 21175, 23275, 27335, 29645, 33725, 36575, 38269, 42955, 47215, 51205, 57475, 60137, 66101, 74195, 80465, 86975, 103873, 112651, 136675, 148225, 163229, 191345, 214775, 236075, 256025, 300685, 330505, 370975, 402325, 420959, 519365, 563255, 727111, 816145, 956725, 1142603, 1503425, 1652525, 2104795, 2596825, 2816275, 3635555, 4080725, 5713015, 7998221, 10523975, 18177775, 28565075, 39991105, 199955525]

約数ペア:

[(1, 199955525), (5, 39991105), (7, 28565075), (11, 18177775), (19, 10523975), (25, 7998221), (35, 5713015), (49, 4080725), (55, 3635555), (71, 2816275), (77, 2596825), (95, 2104795), (121, 1652525), (133, 1503425), (175, 1142603), (209, 956725), (245, 816145), (275, 727111), (355, 563255), (385, 519365), (475, 420959), (497, 402325), (539, 370975), (605, 330505), (665, 300685), (781, 256025), (847, 236075), (931, 214775), (1045, 191345), (1225, 163229), (1349, 148225), (1463, 136675), (1775, 112651), (1925, 103873), (2299, 86975), (2485, 80465), (2695, 74195), (3025, 66101), (3325, 60137), (3479, 57475), (3905, 51205), (4235, 47215), (4655, 42955), (5225, 38269), (5467, 36575), (5929, 33725), (6745, 29645), (7315, 27335), (8591, 23275), (9443, 21175), (10241, 19525), (11495, 17395), (12425, 16093), (13475, 14839)]